Adiabatic body

Abstract

The vacuum insulation module according to the present invention comprises: an inner cover corresponding to an internal space; an outer cover corresponding to an external space and provided to be larger than the inner cover; a vacuum space defined by the outer cover and the internal space of the inner cover and in a vacuum state; and a conductive resistance sheet provided at the connection portion between the inner cover and the outer cover to resist heat conduction. According to the vacuum insulation module of the present invention, it has the advantages of being more convenient to apply to a refrigerator, being easy to handle, and easy to manufacture the refrigerator.

Description

Technology Field

[0001] The present invention relates to a vacuum insulation body. Background Technology

[0002] A vacuum insulator is an item that suppresses heat transfer by maintaining a vacuum inside the body. Since the vacuum insulator can reduce heat transfer by convection and conduction, it can be applied to warming and refrigeration devices. Meanwhile, the insulation method applied to conventional refrigerators generally involved providing expanded polyurethane insulation walls with a thickness of approximately 30 centimeters or more, although this varied depending on whether the device was refrigerated or frozen. However, this resulted in a problem where the internal volume of the refrigerator was reduced.

[0003] There is an attempt to apply a vacuum insulation material to the refrigerator to increase the internal volume of the refrigerator.

[0004] First, there is the applicant's registered patent 10-0343719 (Citation 1). According to the above registered patent, a vacuum adiabatic panel is manufactured, the vacuum adiabatic panel is embedded in the wall of a refrigerator, and the exterior of the vacuum adiabatic panel is finished with a separate molded material made of styrofoam. According to the above method, foaming is not required, and the effect of improved thermal insulation performance can be obtained. However, this method has the problem of increased costs and a complex manufacturing process.

[0005] As another example, Public Patent 10-2015-0012712 (Cited Reference 2) presents a technology for providing a wall with vacuum insulation material and, in addition, providing an insulating wall with foam filler. This method also has the problem of increased costs and a complex manufacturing process.

[0006] As another example, there have been attempts to manufacture the entire wall of a refrigerator as a single piece of vacuum insulation. For instance, U.S. Patent Publication US20040226956A1 (Reference 3) discloses a method for providing a refrigerator insulation structure in a vacuum state. However, it is difficult to achieve a practical level of insulation effect by providing the refrigerator wall in a sufficient vacuum state. To explain in detail, there are problems such as difficulty in preventing heat transfer at the contact point between the outer and inner cases, which have different temperatures; difficulty in maintaining a stable vacuum state; and difficulty in preventing deformation of the case due to negative pressure in the vacuum state. Due to these problems, the technology described in Reference 3 is limited to ultra-low temperature refrigeration devices and does not provide a technology applicable to general households.

[0007] Another method is Korean Patent Publication No. 10-2017-0016187 (Cited Reference 4), which describes a vacuum insulator and a refrigerator. This technology proposes a refrigerator in which both the main body and the door are provided as vacuum insulators. The vacuum insulator itself performs only insulation, and necessary components must be installed in items such as refrigerators to which the vacuum insulator is applied, but this has not been considered.

[0008] As another method, U.S. Patent Publication US2013 / 0257256A1 (Citation 5) proposes a technology that provides a vacuum insulation body and a refrigerator by fixing multiple vacuum insulation panels to a frame. The above technology has the following problems. There is a problem with the difficulty of fastening the vacuum insulation panels to the frame. There is a high risk of insulation loss due to gaps caused by poor fastening between the vacuum insulation panels and the frame. There is a problem that the insulation efficiency of the interior space is reduced because the frame acts as a member connecting the interior and exterior of the room. Prior art literature

[0009] Fig. 7 of Registered Patent 10-0343719 and Published Patent 10-2015-0012712, U.S. Published Patent Application US20040226956A1, and Korean Published Patent Application No. 10-2017-0016187 Figs. 2, 3, 4, and 8, and related descriptions, U.S. Published Patent US2013 / 0257256A1 The problem to be solved

[0010] The present invention is proposed against the background described above, and proposes a vacuum insulation module and a refrigerator in which components are applied to enable modular processing that can be applied in various locations.

[0011] The present invention proposes a vacuum insulation module and a refrigerator that can achieve high insulation efficiency by virtually eliminating cold air leakage through the insulation wall.

[0012] The present invention proposes a vacuum insulation module and a refrigerator capable of reducing the amount of heat passing between the interior and exterior when manufacturing a door and a main body that provide a refrigerator. means of solving the problem

[0013] The vacuum insulation module according to the present invention comprises: an inner cover corresponding to an internal space; an outer cover corresponding to an external space and provided to be larger than the inner cover; a vacuum space defined by the outer cover and the internal space of the inner cover and in a vacuum state; and a conductive resistance sheet provided at the connection portion between the inner cover and the outer cover to resist heat conduction. According to the vacuum insulation module of the present invention, it has the advantages of being more convenient to apply to a refrigerator, being easy to handle, and easy to manufacture the refrigerator.

[0014] The outer cover includes: an outer surface corresponding to the external space; a side portion having an extension direction different from the outer surface portion to cover the side of the vacuum space portion; and a folded portion in which the side portion and the outer surface portion are folded and connected. According to this, the housing of the refrigerator can be configured more conveniently.

[0015] A first reinforcing frame is included, which is placed inside the vacuum space and contacts the outer surface, the side surface, and the bent portion. According to this, there is an advantage of easy connection between modules.

[0016] By making the above-mentioned conductive resistance sheet have the same extension direction as the extension direction of the above-mentioned inner cover, the advantage of not requiring a separate structural sheet can be expected.

[0017] By including a second reinforcing frame that is fastened to the inner cover, the connection between adjacent modules can be facilitated.

[0018] The inner cover is provided to be thinner than the outer cover, so as to be able to resist heat conduction.

[0019] The outer cover may be extended further outward from the inner cover, making it easier to connect modules.

[0020] A fastening frame provided on at least one of the outer cover and the inner cover may be included. Accordingly, adjacent modules can be conveniently fastened together on their own without the need for a separate fastening structure.

[0021] The outer cover is provided with a fastening edge that extends further from the vacuum space for fastening with other parts. By fastening the fastening edge to an adjacent module, the modules can be fastened to each other without affecting the vacuum space.

[0022] A refrigerator according to another aspect of the present invention comprises: a main body having a receiving space and an opening allowing access to the receiving space; and a door for opening and closing the receiving space, wherein the main body comprises first and second insulation modules having different degrees of insulation; the first insulation module comprises: an inner cover defining at least a portion of a wall for the first space; an outer cover defining at least a portion of a wall for the second space having a temperature different from that of the first space; a sealing portion sealing the first plate member and the second plate member to provide a third space which is a vacuum space having a temperature between that of the first space and the second space; and a supporting unit maintaining the third space. In order to reduce the amount of heat transfer between the first plate member and the second plate member, the invention includes a conductive resistance sheet connecting the first plate member and the second plate member to each other, wherein the thickness of the conductive resistance sheet is thinner than that of at least one of the inner cover and the outer cover, and the second insulation module is provided to have a lower degree of insulation than the first insulation module, and is arranged to contact the side portion of the plurality of first insulation modules so as to connect the plurality of first insulation modules, and the first insulation modules are a plurality, and further includes an inner fastening frame connecting the inner cover of one of the plurality of first insulation modules and the inner cover of another of the plurality of first insulation modules. According to the present invention, there is an advantage that the refrigerator can be manufactured conveniently without leakage of cold air.

[0023] The inner fastening frame described above includes a first part and a second part to surround the corner of the wall forming the first space. Accordingly, fastening between modules can be facilitated.

[0024] The first part of the inner fastening frame may be arranged to cover or overlap the portion where the inner cover of at least one first insulation module forming the rear of the refrigerator and the conductive resistance sheet of the at least one first insulation module are joined. According to this, not only can an insulation wall be provided to form an internal space, but heat transfer can also be shielded.

[0025] A portion of the first part of the inner fastening frame is positioned to contact the inner cover of at least one of the first insulation modules, and another portion of the first part of the inner fastening frame is positioned to contact the second insulation module. Accordingly, the connection between modules can be provided more robustly with high insulation performance.

[0026] The above-described first and second insulation modules may further include a fastening member for joining them, wherein the fastening member may be positioned at a predetermined distance from the conductive resistance sheet in the direction of the second insulation module. According to this, the modules can be joined more securely without heat loss.

[0027] One side of the conductive resistance sheet is positioned to face the third space, and the other side is positioned to face the second insulation module. Accordingly, the thermal conductivity reduction performance through the conductive resistance sheet can be improved.

[0028] It additionally includes a rear fastening edge extending from the outer cover of one first insulation module toward another first insulation module. According to this, a space for placing the second insulation module can be conveniently provided and insulation performance can be improved.

[0029] The inner fastening frame is positioned to overlap with the rear fastening edge at a predetermined distance, thereby enabling a more robust structural strength in the refrigerator.

[0030] The second insulation module is positioned between the inner fastening frame and the rear fastening edge. Accordingly, greater insulation performance can be secured.

[0031] The second insulation module above has a through hole formed therein through which at least one of an electrical line, a refrigerant pipe, a cold air passage, and a water passage passes. According to this, it is convenient to provide additional components necessary for the operation of the refrigerator.

[0032] According to another aspect, the refrigerator of the present invention comprises: a main body having a receiving space; and a door for opening and closing the receiving space. At least one of the main body and the door comprises a vacuum insulation module having an interior provided with a high vacuum to perform an insulating function; and a non-metallic insulating member provided on the rim of the vacuum insulation module. Accordingly, different types of insulation modules may be applied. Consequently, effects such as high thermal insulation performance, high structural strength, and improved ease of manufacturing can be obtained. Effects of the invention

[0033] According to the present invention, by modularizing the vacuum insulation body into a vacuum insulation module, inventory costs can be reduced, manufacturing can be simplified, productivity can be improved, and costs can be reduced.

[0034] According to the present invention, the vacuum insulation modules themselves are connected to each other, and since there is no cold air leakage at the connection gap, cold air leakage passing through the insulation wall is blocked, and the energy efficiency of the refrigerator can be increased.

[0035] According to the present invention, since deformation of the part due to high vacuum can be prevented during the production of the part for modularization, the reliability of the finished product can be increased. Brief explanation of the drawing

[0036] FIG. 1 is a perspective view of a refrigerator according to an embodiment. FIG. 2 is a schematic drawing showing a vacuum insulation used in the main body and door of a refrigerator. FIG. 3 is a drawing showing various embodiments of the internal configuration of the vacuum space. FIG. 4 is a drawing showing various embodiments of a conductive resistance sheet and its periphery. Figure 5 is a graph showing the change in thermal insulation performance and gas conductivity according to vacuum pressure by applying simulation. Figure 6 is a graph observing the process of exhausting the interior of a vacuum insulation body with respect to time and pressure when a supporting unit is used. Figure 7 is a graph comparing vacuum pressure and gas conductivity. FIG. 8 is a cross-sectional view of the first door vacuum insulation module. FIG. 9 is a cross-sectional view of the corner portion of the second door vacuum insulation module. FIG. 10 is a cross-sectional view of the first main body vacuum insulation module. FIG. 11 is a cross-sectional view of the second main body vacuum insulation module. FIG. 12 is a cross-sectional view of the third main body vacuum insulation module. FIG. 13 is a drawing illustrating the pressure of the first door vacuum insulation module. FIG. 14 is a diagram simulating the deformation of the first door vacuum insulation module. Fig. 15 is a diagram simulating the deformation of the second door vacuum insulation module. FIG. 16 is an exploded perspective view of a door to which a door vacuum insulation module according to an embodiment is applied. FIG. 17 is a cross-sectional view of the edge portion of the door. FIG. 18 is a perspective view of a refrigerator to which a main body vacuum insulation module according to an embodiment is applied. FIG. 19 is a cross-sectional view taken in the A-A' direction of the main body of FIG. 18 according to one embodiment. FIGS. 20 and 21 are cross-sectional views of the main body of FIG. 18 cut along the A-A' direction according to another embodiment. FIGS. 22 and 23 are cross-sectional views of the main body of FIG. 18 cut along the B-B' direction according to another embodiment. Specific details for implementing the invention

[0037] Specific embodiments of the present invention are proposed below with reference to the drawings. However, the concept of the present invention is not limited to the embodiments presented below, and those skilled in the art who understand the concept of the present invention may easily propose other embodiments included within the scope of the same concept by adding, changing, deleting, and adding components, and such are also to be considered to be included within the scope of the concept of the present invention.

[0038] The drawings presented below for the description of the embodiments may differ from the actual article, be exaggerated, or depict simple or detailed parts in a simplified manner; however, this is intended to facilitate understanding of the technical concept of the present invention and should not be interpreted as being limited to the size, structure, and shape presented in the drawings. Nevertheless, efforts are made to represent the actual shape as accurately as possible.

[0039] In the following embodiments, provided there is no conflict, the description of one embodiment may be applied to the description of another embodiment, and a part of one embodiment may be applied to another embodiment with only specific parts modified.

[0040] In the following explanation, vacuum pressure refers to any pressure state lower than atmospheric pressure. Furthermore, the expression that A has a higher degree of vacuum than B means that the vacuum pressure of A is lower than the vacuum pressure of B.

[0041] In the present invention, an insulating module having a vacuum space formed inside can be referred to as a first insulating module.

[0042] An example of the first insulation module above may be the first door vacuum insulation module (100) of FIG. 8, the second door vacuum insulation module (110) of FIG. 9, the first main body vacuum insulation module (120) of FIG. 10, the second main body vacuum insulation module (130) of FIG. 11, the third main body vacuum insulation module (140) of FIG. 12, the first insulation module and the left side vacuum insulation module (302) and the right side vacuum insulation module (303) of FIG. 19 and FIG. 20, and the top surface vacuum insulation module (304), the left side vacuum insulation module (302), and the right side vacuum insulation module (303) of FIG. 21 and FIG. 23.

[0043] As a variation, the vacuum insulation module of FIGS. 8 to FIGS. 9 can be applied to the main body.

[0044] As another variation, the vacuum insulation module of FIGS. 10 to FIGS. 12 can be applied to a door.

[0045] The first insulation module may include a first plate member (10) defining at least a portion of the wall for a first space and a second plate member (20) defining at least a portion of the wall for a second space that has a different temperature from the first space.

[0046] The first plate member (10) may include a plurality of layers. The second plate member (20) may include a plurality of layers.

[0047] The first insulation module may further include a sealing portion that seals the first plate member (10) and the second plate member (20) so as to provide a third space which is a vacuum space with a temperature between the temperature of the first space and the temperature of the second space.

[0048] Meanwhile, if either of the first or second plate members is located in the inner space of the third space, it can be represented as an inner cover (101, 122, 132, 142). If the other of the first or second plate members is located in the outer space of the third space, it can be represented as an outer cover (201, 121, 131, 141). For example, the inner space of the third space may be a storage compartment of a refrigerator. The outer space of the third space may be an external space of a refrigerator.

[0049] Below, an example is described in which the first plate member (10) is defined as the inner cover (101, 122, 132, 142) and the second plate member (20) is defined as the outer cover (201, 121, 131, 141).

[0050] The first insulation module may further include a supporting unit that maintains the third space.

[0051] The first insulation module may further include a conductive resistance sheet (60, 123) connecting the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141) to each other in order to reduce the amount of heat transfer between the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141).

[0052] At least a portion of the conductive resistance sheet (60, 123) may be positioned to face the third space. The conductive resistance sheet (60, 123) may be positioned between the edge of the inner cover (101, 122, 132, 142) and the edge of the outer cover (201, 121, 131, 141). The conductive resistance sheet (60, 123) may be positioned between the surface of the inner cover (101, 122, 132, 142) facing the first space and the surface of the outer cover (201, 121, 131, 141) facing the second space. The above conductive resistance sheet (60, 123) may be placed between the side portion of the inner cover (101, 122, 132, 142) and the side portion of the outer cover (201, 121, 131, 141).

[0053] At least a portion of the above-mentioned conductive resistance sheet (60, 123) may be formed to extend in substantially the same direction as the direction in which the inner cover (101, 122, 132, 142) extends.

[0054] The thickness of the conductive resistance sheet (60, 123) may be configured to be thinner than at least one of the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141). The thinner the thickness of the conductive resistance sheet (60, 123), the more heat transfer between the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141) can be reduced.

[0055] One end of the conductive resistance sheet (60, 123) may be positioned so as to overlap at least a portion with the inner cover (101, 122, 132, 142). This is to provide a space for joining the one end of the conductive resistance sheet (60, 123) and the inner cover (101, 122, 132, 142). The joining method may include welding.

[0056] The other end of the conductive resistance sheet (60, 123) may be positioned so as to overlap at least a portion with the outer cover (201, 121, 131, 141). This is to provide a space for joining the other end of the conductive resistance sheet (60, 123) and the outer cover (201, 121, 131, 141). The joining method may include welding.

[0057] Although the thinner the conductive resistance sheet (60, 123), the advantage is that heat transfer can be reduced, but there may be difficulties in combining the conductive resistance sheet (60, 123) between the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141).

[0058] In another embodiment replacing the conductive resistance sheet (60, 123), the conductive resistance sheet (60, 123) may be removed, and the thickness of either the inner cover (101, 122, 132, 142) or the outer cover (201, 121, 131, 141) may be thinner than that of the other. In this case, the thickness of the one may be thicker than the conductive resistance sheet (60, 123). In this case, the length of the one may be longer than the length of the conductive resistance sheet (60, 123). Such a configuration can reduce the increase in heat transfer while removing the conductive resistance sheet (60, 123). In addition, the difficulty of combining the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141) can be reduced.

[0059] At least a portion of the inner cover (101, 122, 132, 142) and at least a portion of the outer cover (201, 121, 131, 141) may be arranged to overlap. This is to provide a space for combining the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141). An additional cover may be placed on the thinner of the inner cover (101, 122, 132, 142) and the outer cover (201, 121, 131, 141). This is to protect the thinned cover.

[0060] In the present invention, an insulation module having different characteristics from the first insulation module may be referred to as a second insulation module. For example, a foamed member (406) may be referred to as a second insulation module.

[0061] The second insulation module above may have a lower degree of insulation than the first insulation module.

[0062] The vacuum level inside the second insulation module may be lower than that of the first insulation module.

[0063] The second insulation module mentioned above may be a non-vacuum insulation module in which the interior is in a non-vacuum state.

[0064] The above second insulation module can be made of non-metal.

[0065] The above second insulation module may be made of resin or foamable polyurethane (PU).

[0066] The second insulation module may be an insulation module equipped with more components than the first insulation module. It may be more convenient to install or fasten components compared to the first insulation module. The first insulation module has a vacuum space formed inside, which may make it difficult to install or fasten components. For example, components for a door, such as a door gasket, door hinge, heater, or hot line, may be connected to or coupled to the second insulation module.

[0067] The second insulation module may be an insulation module having more through holes formed than the first insulation module. The through holes may be provided to form at least one of a conduit through which electricity flows, a conduit through which refrigerant flows, a conduit through which cold or hot air flows, or a conduit through which water flows. Since the first insulation module has a vacuum space formed inside it, it may be difficult to form the through holes.

[0068] If there are multiple first insulation modules, the second insulation module may be placed between the multiple first insulation modules. The first insulation module may be a medium for connecting the multiple first insulation modules. At least one surface of the second insulation module may be connected to or connected to any one of the multiple first insulation modules. At least another surface of the second insulation module may be connected to or connected to another of the multiple first insulation modules. In this case, the convenience of working in connecting or connecting the multiple first insulation modules to each other can be improved.

[0069] The second insulation module may be disposed on the outer surface of either the first or second plate member of the first insulation module. The second insulation module may be a medium for mounting a component that requires fastening to the first insulation module. One side of the second insulation module may be connected to or coupled to either the first or second plate. The other side of the second insulation module may be connected to or coupled to the component. In this case, work convenience can be improved when connecting or coupling the component to the first insulation module.

[0070] The second insulation module may be positioned to cover at least a portion of the conductive resistance sheet (60, 123) of the first insulation module. The second insulation module may be positioned so that at least a portion of it overlaps with the conductive resistance sheet (60, 123) of the first insulation module. The second insulation module may be a protective device that reduces damage to the conductive resistance sheet (60, 123). Additionally, the second insulation module may be a medium for mounting a component that requires fastening. One side of the second insulation module may be connected to or coupled with the conductive resistance sheet (60, 123). The other side of the second insulation module may be connected to or coupled with the component.

[0071] The second insulation module may be positioned to cover at least a portion of the inner cover (101, 122, 132, 142) of the first insulation module. At least a portion of the second insulation module may be positioned to overlap with the inner cover (101, 122, 132, 142) of the first insulation module. The second insulation module may be a protective device that reduces damage to the inner cover (101, 122, 132, 142) of the first insulation module. Additionally, the second insulation module may be a medium for mounting a component that requires fastening. One side of the second insulation module may be connected to or coupled with the inner cover (101, 122, 132, 142) of the first insulation module. The other side of the second insulation module may be connected to or coupled with the component.

[0072] The second insulation module may be provided to define at least a portion of a wall connecting a plurality of first insulation modules. For example, the inner cover of the plurality of first insulation modules may define at least a portion of a wall forming a storage compartment of a refrigerator, and the second insulation module disposed between the plurality of first insulation modules may be configured to define another portion of a wall forming a storage compartment.

[0073] The second insulation module may be positioned to contact the side portions of the plurality of first insulation modules.

[0074] FIG. 1 is a perspective view of a refrigerator according to an embodiment.

[0075] Referring to FIG. 1, the refrigerator (1) includes a main body (2) provided with a cavity (9) for storing items, and a door (3) provided to open and close the main body (2). The door (3) may be arranged to rotate or slide to open and close the cavity (9). The cavity (9) may provide at least one of a refrigerator compartment and a freezer compartment.

[0076] A component forming a refrigeration cycle that supplies cold air to the cavity is provided. Specifically, it includes a compressor (4) that compresses the refrigerant, a condenser (5) that condenses the compressed refrigerant, an expander (6) that expands the condensed refrigerant, and an evaporator (7) that evaporates the expanded refrigerant to remove heat. As a typical structure, a fan may be installed at a location adjacent to the evaporator (7), and the fluid blown from the fan may be blown into the cavity (9) after passing through the evaporator (7). By adjusting the amount and direction of airflow by the fan, adjusting the amount of circulating refrigerant, or adjusting the compression ratio of the compressor, the refrigeration load can be controlled, thereby enabling control of the refrigerated space or the frozen space.

[0077] FIG. 2 is a schematic drawing showing a vacuum insulation used in the main body and door of a refrigerator. The vacuum insulation on the main body side is shown with the walls on the top and sides removed, and the vacuum insulation on the door side is shown with a portion of the front wall removed. Additionally, a schematic cross-section of the portion where the conductive resistance sheet (60)(63) is provided is shown to make it easier to understand.

[0078] Referring to FIG. 2, the vacuum insulation includes a first plate member (10) providing a wall of a low-temperature space, a second plate member (20) providing a wall of a high-temperature space, and a vacuum space (50) defined as a gap between the first plate member (10) and the second plate member (20). A conductive resistance sheet (60)(63) is included to prevent heat conduction between the first and second plate members (10)(20). A sealing part (61) is provided to seal the first plate member (10) and the second plate member (20) in order to seal the vacuum space (50). When the vacuum insulation is applied to a refrigerator or a warming cabinet, the first plate member (10) may be an inner case installed inside a control space that controls the temperature, and the second plate member (20) may be an outer case installed outside the control space. A machine room (8) for housing components that provide a refrigeration cycle is placed at the lower rear side of the vacuum insulation body on the main body side, and an exhaust port (40) for exhausting air from the vacuum space (50) to create a vacuum state is provided on one side of the vacuum insulation body. Additionally, a conduit (64) penetrating the vacuum space (50) may be further installed for the installation of defrosting water and electrical lines.

[0079] The first plate member (10) may define at least a portion of a wall for a first space provided on the side of the first plate member. The second plate member (20) may define at least a portion of a wall for a second space provided on the side of the second plate member. The first space and the second space may be defined as spaces with different temperatures. Here, the wall for each space may function not only as a wall that is in direct contact with the space, but also as a wall that is not in contact with the space. For example, the vacuum insulation of the embodiment may be applied even in the case of an article having additional separate walls that are in contact with each space.

[0080] Factors causing the above vacuum insulation to lose its insulation effect include heat conduction between the first plate member (10) and the second plate member (20), heat radiation between the first plate member (10) and the second plate member (20), and gas conduction in the vacuum space (50).

[0081] In the following, a thermal resistance unit provided to reduce thermal insulation loss in relation to the above-mentioned heat transfer factors is described. Meanwhile, the vacuum insulation body and refrigerator of the embodiment do not exclude having another insulation means on at least one side of the vacuum insulation body. Accordingly, an insulation means using foam or the like may be additionally provided on the other side.

[0082] FIG. 3 is a drawing showing various embodiments of the internal configuration of the vacuum space.

[0083] First, referring to FIG. 3a, the vacuum space (50) can be provided as a third space with a pressure different from that of the first space and the second space, preferably in a vacuum state, to reduce thermal insulation loss. The third space can be provided at a temperature between that of the first space and the second space. Since the third space is provided as a vacuum space, the first plate member (10) and the second plate member (20) receive a contracting force in a direction of approaching each other due to a force equal to the pressure difference between the spaces, so the vacuum space (50) can be deformed in a direction of shrinkage. In this case, thermal insulation loss may occur due to an increase in the amount of radiative transfer resulting from the contraction of the vacuum space and an increase in the amount of conductive transfer resulting from the contact between the plate members (10) (20).

[0084] A supporting unit (30) may be provided to reduce deformation of the vacuum space (50). The supporting unit (30) includes a bar (31). The bar (31) may extend in a direction substantially perpendicular to the plate member to support the gap between the first plate member and the second plate member. A supporting plate (35) may be additionally provided at at least one end of the bar (31). The supporting plate (35) may connect at least two bars (31) and extend in a direction horizontal to the first and second plate members (10)(20). The supporting plate may be provided in a plate shape or in a grid shape so that the contact area with the first and second plate members (10)(20) is reduced, thereby reducing heat transfer. The bar (31) and the support plate are fixed in at least one part and can be inserted together between the first and second plate members (10)(20). The support plate (35) can contact at least one of the first and second plate members (10)(20) to prevent deformation of the first and second plate members (10)(20). Additionally, when considering the extension direction of the bar (31), the total cross-sectional area of ​​the support plate (35) is provided to be larger than the total cross-sectional area of ​​the bar (31), so that heat transmitted through the bar (31) can be diffused through the support plate (35).

[0085] As the material of the supporting unit (30), a resin selected from PC, glass fiber PC, low outgassing PC, PPS, and LCP may be used to obtain high compressive strength, low outgassing and water absorption rate, low thermal conductivity, high compressive strength at high temperatures, and excellent processability.

[0086] A radiation resistance sheet (32) for reducing thermal radiation between the first and second plate members (10)(20) through the vacuum space (50) is described. The first and second plate members (10)(20) may be provided with a stainless steel material capable of providing corrosion prevention and sufficient strength. Since the stainless steel material has a relatively high emissivity of 0.16, a large amount of radiant heat transfer may occur. In addition, the emissivity of the supporting unit made of resin is lower than that of the plate members, and since it is not provided on the entire inner surface of the first and second plate members (10)(20), it does not have a significant effect on radiant heat. Therefore, the radiation resistance sheet may be provided in a plate shape across most of the area of ​​the vacuum space (50) in order to primarily act to reduce radiant heat transfer between the first plate member (10) and the second plate member (20). As for the material of the radiation resistance sheet (32), an article with low emissivity is preferred, and in the embodiment, an aluminum foil with an emissivity of 0.02 may be preferably used. In addition, since a single radiation resistance sheet cannot provide sufficient radiant heat blocking action, at least two radiation resistance sheets (32) may be provided at a certain distance apart so that they do not come into contact with each other. In addition, at least one radiation resistance sheet may be provided in a state in contact with the inner surface of the first and second plate members (10)(20).

[0087] Referring to FIG. 3b, the spacing between plate members is maintained by a supporting unit (30), and a porous material (33) can be filled inside the vacuum space (50). Although the porous material (33) may have a higher emissivity than stainless steel, which is the material of the first and second plate members (10)(20), it has a high resistance efficiency for radiant heat transfer because it fills the vacuum space.

[0088] In the case of this embodiment, there is an effect that a vacuum insulation body can be manufactured without a radiation resistance sheet (32).

[0089] Referring to FIG. 3c, a supporting unit (30) for maintaining the vacuum space (50) is not provided. Instead, a porous material (33) is provided wrapped in a film (34). At this time, the porous material (33) may be provided in a compressed state to maintain the spacing of the vacuum space. The film (34) may be provided, for example, as a PE material with holes.

[0090] In the case of this embodiment, a vacuum insulation body can be manufactured without the supporting unit (30). In other words, the porous material (33) can perform both the function of the radiation resistance sheet (32) and the function of the supporting unit (30).

[0091] FIG. 4 is a drawing showing various embodiments of a conductive resistance sheet and its surrounding parts. Although the structure of each conductive resistance sheet is simply illustrated in FIG. 2, it can be understood in more detail through this drawing.

[0092] First, the conductive resistance sheet shown in FIG. 4a can be preferably applied to the vacuum insulation body on the main body side. Specifically, in order to maintain the interior of the vacuum insulation body as a vacuum, the second plate member (20) and the first plate member (10) must be sealed. At this time, since the two plate members each have different temperatures, heat transfer may occur between them. A conductive resistance sheet (60) is provided to prevent heat conduction between two plate members of different types.

[0093] The conductive resistance sheet (60) may be provided as a sealing portion (61) at both ends that is sealed to define at least a portion of the wall for the third space and maintain a vacuum state. The conductive resistance sheet (60) may be provided as a thin sheet in micrometers to reduce the amount of heat conduction flowing along the wall of the third space. The sealing portion (610) may be provided as a welded portion. That is, the conductive resistance sheet (60) and the plate member (10)(20) may be fused together. To induce a fusion action between them, the conductive resistance sheet (60) and the plate member (10)(20) may use the same material, and stainless steel may be used as the material. The sealing portion (610) is not limited to a welded portion and may be provided through methods such as caulking. The conductive resistance sheet (60) may be provided in a curved shape. Accordingly, the thermal conduction distance of the above-mentioned conductive resistance sheet (60) is provided to be longer than the straight distance of each plate member, so that the amount of thermal conduction can be further reduced.

[0094] Temperature changes occur along the conductive resistance sheet (60). Therefore, in order to block heat transfer to the outside, it is desirable to provide a shielding part (62) on the outside of the conductive resistance sheet (60) so that thermal insulation occurs. In other words, in the case of a refrigerator, the second plate member (20) is at a high temperature and the first plate member (10) is at a low temperature. Then, heat conduction occurs from the high temperature to the low temperature in the conductive resistance sheet (60), and the temperature of the sheet changes rapidly along the heat flow. Therefore, if the conductive resistance sheet (60) is open to the outside, severe heat transfer may occur through the open area. To reduce such heat loss, a shielding part (62) is provided on the outside of the conductive resistance sheet (60). For example, even if the conductive resistance sheet (60) is exposed to either a low-temperature space or a high-temperature space, it becomes undesirable because the conductive resistance sheet (60) cannot perform the role of conductive resistance to the extent of the amount exposed.

[0095] The shielding portion (62) may be provided as a porous material in contact with the outer surface of the conductive resistance sheet (60), may be provided as an insulating structure exemplified by a separate gasket placed on the outside of the conductive resistance sheet (60), or may be provided as a part of the vacuum insulation provided in a position facing the corresponding conductive resistance sheet (60) when the vacuum insulation on the main body side is closed against the vacuum insulation on the door side. In order to reduce heat loss even when the main body and the door are open, it is preferable that the shielding portion (62) be provided as a porous material or a separate insulating structure.

[0096] Here, the inner surface of the conductive resistance sheet (60) refers to the surface of the conductive resistance sheet (60) facing the vacuum space. The outer surface of the conductive resistance sheet (60) may refer to a surface that does not face the vacuum space. The definitions of the outer surface and the inner surface may be applied equally to other members forming the vacuum space.

[0097] The conductive resistance sheet shown in FIG. 4b can be preferably applied to the vacuum insulation on the door side, and the parts that differ from FIG. 4a are explained in detail, while the same parts are described in the same way. A side frame (70) is further provided on the outside of the conductive resistance sheet (60). The side frame (70) may accommodate components for sealing the door and the main body, exhaust ports required for the exhaust process, and getter ports for maintaining the vacuum. This is because while mounting components may be convenient in the case of the vacuum insulation on the main body side, the position is limited on the door side.

[0098] In the case of the vacuum insulation on the door side, the conductive resistance sheet (60) is difficult to place at the leading edge of the vacuum space, that is, at the corner side. This is because the corner edge of the door (3) is exposed to the outside, unlike the main body. More specifically, if the conductive resistance sheet (60) is placed at the leading edge of the vacuum space, the corner edge of the door (3) is exposed to the outside, so there is a disadvantage in that a separate insulation section must be constructed to insulate the conductive resistance sheet (60).

[0099] The conductive resistance sheet shown in FIG. 4c can preferably be installed in a conduit penetrating a vacuum space, and the parts that differ from FIG. 4a and FIG. 4b are described in detail, while the same parts are described in the same way. The periphery where the conduit (64) is provided can be provided with the same shape as FIG. 4a, and more preferably, a corrugated conductive resistance sheet (63) can be provided. According to this, the heat transfer path can be extended and deformation caused by pressure difference can be prevented. In addition, a separate shielding member for insulating the conductive resistance sheet can also be provided.

[0100] Referring again to FIG. 4a, the heat transfer path between the first plate member (10) and the second plate member (20) is described. The heat passing through the vacuum insulation can be divided into surface conduction heat (①) transmitted along the surface of the vacuum insulation, more specifically along the conduction resistance sheet (60), supporter conduction heat (②) transmitted along the supporting unit (30) provided inside the vacuum insulation, gas conduction heat (③) through the internal gas of the vacuum space, and radiative heat transmitted through the vacuum space (④).

[0101] The above heat transfer can be modified according to various design values. For example, the supporting unit can be changed so that the first and second plate members (10)(20) can withstand vacuum pressure without deformation, the vacuum pressure can be changed, the spacing length of the plate members can be changed, the length of the conduction resistance unit can be changed, and it can be varied depending on the degree of temperature difference between each space (first space and second space) provided by the plate members. In the case of the embodiment, a desirable configuration was determined considering that the total heat transfer amount is reduced compared to the heat transfer amount of a conventional insulation structure provided by foaming polyurethane. Here, the actual heat transfer coefficient in a conventional foaming polyurethane refrigerator can be presented as 19.6 mW / mK.

[0102] When analyzing the heat transfer amount of the vacuum insulation in the embodiment according to this, the heat transfer by gas conduction heat (③) can be minimized. For example, it can be controlled to less than 4% of the total heat transfer. The heat transfer by solid conduction heat, defined as the sum of the surface conduction heat (①) and the supporter conduction heat (②), is the greatest. For example, it can reach 75%. The radiative heat transfer (③) is smaller than the solid conduction heat but larger than the heat transfer by gas conduction heat. For example, the radiative heat transfer (③) can account for approximately 20% of the total heat transfer amount.

[0103] According to this heat transfer distribution, the effective heat transfer coefficient (eK) (W / mK) can have the order of Equation 1 when comparing the above heat transfer (①②③④).

[0104]

[0105] Here, the actual heat transfer coefficient (eK) is a value that can be measured using the shape and temperature difference of the subject item, and is obtained by measuring the total amount of heat transfer and the temperature of at least one part through which heat is transferred. For example, by placing a quantitatively measurable heat source inside a refrigerator and knowing the amount of heat generated (W), measuring the temperature distribution of the door (K) through which heat is transferred via the door body and the door rim respectively, and verifying the heat transfer path as a converted value (m), the actual heat transfer coefficient can be obtained.

[0106] The actual heat transfer coefficient (eK) of the entire vacuum insulation is a value given by k = QL / A△T, where Q is the heat transfer amount (W) which can be obtained using the heat generation amount of the heater, and A is the cross-sectional area (m²) of the vacuum insulation. 2 ) and L is the thickness (m) of the vacuum insulation, and △T can be defined as the temperature difference.

[0107] The above surface heat conduction amount can be determined through the temperature difference (△T) between the inlet and outlet of the conductive resistance sheet (60)(63), the cross-sectional area (A) of the conductive resistance sheet, the length (L) of the conductive resistance sheet, and the thermal conductivity (k) of the conductive resistance sheet (the thermal conductivity of the conductive resistance sheet can be determined in advance as a material property). The above supporter heat conduction amount can be determined through the temperature difference (△T) between the inlet and outlet of the supporting unit (30), the cross-sectional area (A) of the supporting unit, the length (L) of the supporting unit, and the thermal conductivity (k) of the supporting unit. Here, the thermal conductivity of the above supporting unit can be determined in advance as a material property. The sum of the gas conduction heat (③) and the radiative heat transfer (④) can be determined by subtracting the surface conduction heat and the supporter conduction heat from the total heat transfer amount of the vacuum insulation. The ratio of the gas conduction heat to the radiative heat transfer can be determined by calculating the radiative heat transfer when the vacuum level of the vacuum space is significantly lowered so that there is no gas conduction heat.

[0108] When a porous material is provided inside the vacuum space (50), the porous material conduction heat (⑤) can be considered as the sum of the supporter conduction heat (②) and the radiant heat (④). The porous material conduction heat can be changed by various variables such as the type and amount of the porous material.

[0109] According to the embodiment, it is preferable that the temperature difference (△T1) between the geometric center formed by adjacent bars (31) and the location where the bars are situated be less than 0.5 degrees Celsius. Additionally, it is preferable to suggest that the temperature difference (△T2) between the geometric center formed by adjacent bars and the edge portion of the vacuum insulation be less than 5 degrees Celsius. Furthermore, in the second plate member, the temperature difference from the average temperature of the second plate member may be greatest at the point where the heat transfer path passing through the conductive resistance sheet (60)(63) meets the second plate member. For example, if the second space is a hotter region compared to the first space, the temperature becomes lowest at the point of the second plate member where the heat transfer path passing through the conductive resistance sheet meets the second plate member. Likewise, if the second space is a colder region compared to the first space, the temperature reaches its maximum at the point of the second plate member where the heat transfer path passing through the conductive resistance sheet meets the second plate member.

[0110] This means that the amount of heat transferred through other places, excluding the surface conduction heat passing through the conductive resistance sheet, must be sufficiently controlled, and the advantage of achieving the total heat transfer amount satisfied by the vacuum insulation is obtained only when the surface conduction heat accounts for the largest amount of heat transfer. To this end, the amount of temperature change of the conductive resistance sheet can be controlled to be greater than the amount of temperature change of the plate member.

[0111] The physical characteristics of each component providing the above vacuum insulation are described. Forces due to vacuum pressure are applied to all components of the above vacuum insulation. Therefore, a certain level of strength (N / m²) 2 It is desirable to use a material having ).

[0112] Against this backdrop, it is desirable that the plate member (10)(20) and the side frame (70) be made of a material having sufficient strength so as not to be damaged despite vacuum pressure. For example, if the number of bars (31) is reduced to limit support heat conduction, deformation of the plate member due to vacuum pressure may occur, which may have a negative effect on the appearance. The radiation resistance sheet (32) is preferably made of an article that has low emissivity and can be easily processed into a thin film, and must have sufficient strength to prevent deformation from external impact. The supporting unit (30) must be provided with strength capable of supporting the force caused by vacuum pressure and withstanding external impact, and must be processable. The conduction resistance sheet (60) is preferably made of a material that is thin plate-like and capable of withstanding vacuum pressure.

[0113] In the embodiments, the plate member, side frame, and conductivity resistance sheet may be made of stainless steel having the same strength. The radiation resistance sheet may be made of aluminum having a lower strength than stainless steel. The supporting unit may be made of resin having a lower strength than aluminum.

[0114] Unlike strength viewed from the perspective of the material as described above, an analysis is required regarding stiffness. The stiffness (N / m) is a property that does not deform easily, and even if the same material is used, the stiffness may vary depending on the shape. Although the conductive resistance sheet (60)(63) may use a material with high strength, it is preferable to have low stiffness to increase thermal resistance and to minimize radiant heat by spreading evenly without rough surfaces when vacuum pressure is applied. The radiation resistance sheet (32) requires a certain level of stiffness to prevent contact with other parts due to deformation. In particular, the edge portion of the radiation resistance sheet may sag due to its own weight and generate conductive heat. Therefore, a certain level of stiffness is required. The supporting unit (30) requires a degree of stiffness capable of withstanding compressive stress from the plate member and external impact.

[0115] In the embodiments, it is preferable that the plate member and the side frame have the highest rigidity to prevent deformation caused by vacuum pressure. It is preferable that the supporting unit, particularly the bar, has the second highest rigidity. It is preferable that the radiation resistance sheet has less rigidity than the supporting unit but more rigidity than the conduction resistance sheet. Finally, it is preferable that the conduction resistance sheet be made of a material with the lowest rigidity so that deformation caused by vacuum pressure occurs easily.

[0116] Even when the interior of the vacuum space (50) is filled with a porous material (33), it is desirable that the conductive resistance sheet has the lowest rigidity, and that the plate member and side frame have the highest rigidity.

[0117] The following describes the vacuum pressure preferably suggested depending on the internal state of the vacuum insulation. As previously explained, the interior of the vacuum insulation must maintain a vacuum pressure to reduce heat transfer. In this case, it can be easily anticipated that maintaining the lowest possible vacuum pressure is desirable for reducing heat transfer.

[0118] The above vacuum space may resist heat transfer only by the supporting unit (30), may resist heat transfer by filling the inside of the vacuum space (50) with the supporting unit and a porous material (33), or may resist heat transfer with the porous material without applying the supporting unit.

[0119] Explain the case where only the supporting unit is provided.

[0120] Figure 5 is a graph showing the change in thermal insulation performance and gas conductivity according to vacuum pressure by applying a simulation.

[0121] Referring to Fig. 5, as the vacuum pressure decreases—that is, as the vacuum level increases—the heat load for the main body alone (Graph 1) or the main body combined with the door (Graph 2) is reduced compared to conventional foamed polyurethane products, and thus the thermal insulation performance is improved. However, it can be seen that the degree of improvement in thermal insulation performance gradually decreases. Additionally, it can be seen that the gas conductivity (Graph 3) decreases as the vacuum pressure decreases. However, it can be seen that even if the vacuum pressure is lowered, the rate of improvement in thermal insulation performance and gas conductivity gradually decreases. Therefore, while it is desirable to lower the vacuum pressure as much as possible, there are problems such as the fact that obtaining an excessive vacuum pressure requires a lot of time and incurs high costs due to the excessive use of getters. In the embodiment, an optimal vacuum pressure is proposed from the above perspective.

[0122] Figure 6 is a graph showing the process of exhausting the interior of a vacuum insulation body with respect to time and pressure when a supporting unit is used.

[0123] Referring to FIG. 6, in order to create a vacuum state in the vacuum space (50), the gas in the vacuum space is exhausted by a vacuum pump while heating (baking) to vaporize the potential gas remaining in the components of the vacuum space. However, when the vacuum pressure reaches a certain level or higher, it reaches a point where the vacuum pressure level no longer increases (△t1). Afterward, the connection of the vacuum pump to the vacuum space is disconnected, and heat is applied to activate the getter (△t2). When the getter is activated, the pressure in the vacuum space drops for a certain period of time but then normalizes to maintain a certain level of vacuum pressure. The vacuum pressure when maintaining a certain level of vacuum pressure after getter activation is approximately 1.8 × 10⁻⁶ -6 It is Torr.

[0124] In the embodiment, the point at which the vacuum pressure no longer substantially decreases even when the vacuum pump is operated to exhaust gas is set as the lower limit of the vacuum pressure used in the vacuum insulation, so that the minimum internal pressure of the vacuum space is 1.8 × 10⁻⁶ -6 Set to Torr.

[0125] Figure 7 is a graph comparing vacuum pressure and gas conductivity.

[0126] Referring to FIG. 7, the gas conductivity according to vacuum pressure is shown as a graph of the actual heat transfer coefficient (eK) according to the size of the gap inside the vacuum space (50). The gap of the vacuum space was measured in three cases: 2.76 mm, 6.5 mm, and 12.5 mm. The gap of the vacuum space is defined as follows: when the radiation resistance sheet (32) is inside the vacuum space, it is the distance between the radiation resistance sheet and the adjacent plate, and when the radiation resistance sheet is not inside the vacuum space, it is the distance between the first plate member and the second plate member.

[0127] The point corresponding to the conventional effective heat transfer coefficient of 0.0196 W / mk, provided by foaming polyurethane as insulation, is 2.65×10⁻⁶ even when the gap size is small at 2.76 mm. -1 It was observed to be Torr. Meanwhile, even if the vacuum pressure decreases, the point at which the reduction effect of the insulation due to gas conduction heat saturates is approximately 4.5 × 10⁻⁶. -3 It was confirmed that it was a point of Torr. The above 4.5×10 -3 The pressure in Torr can be determined as the point where the reduction effect of gas conduction heat saturates. In addition, when the actual heat transfer coefficient is 0.1 W / mk, 1.2 × 10 -2 It is Torr.

[0128] When the porous material is provided in the vacuum space without the supporting unit, the gap size ranges from several micrometers to several hundred micrometers. In this case, due to the porous material, radiative heat transfer is small even at relatively high vacuum pressures, i.e., even at low vacuum levels. Therefore, an appropriate vacuum pump is used for that vacuum pressure. The appropriate vacuum pressure for the corresponding vacuum pump is approximately 2.0 × 10⁻⁶. -4 It is Torr. In addition, the vacuum pressure at the point where the reduction effect of gas conductive heat saturates is approximately 4.7 × 10⁻⁶. -2 It is Torr. In addition, the pressure at which the reduction effect of gas conduction heat reaches the conventional actual heat transfer coefficient of 0.0196 W / mk is 730 Torr.

[0129] When the supporting unit and the porous material are provided together in the vacuum space, a vacuum pressure intermediate between the case where only the supporting unit is used and the case where only the porous material is used can be created and used. When only the porous material is used, the lowest vacuum pressure can be created and used.

[0130] The vacuum insulation body may include a first plate member defining at least a portion of a wall for a first space, and a second plate member defining at least a portion of a wall for a second space having a temperature different from that of the first space. The first plate member may include a plurality of layers. The second plate member may include a plurality of layers.

[0131] The vacuum insulation body may further include a sealing portion that seals the first plate member and the second plate member so as to provide a third space which is a vacuum space with a temperature between the temperature of the first space and the temperature of the second space.

[0132] Meanwhile, if either of the first plate member and the second plate member is located in the inner space of the third space, the plate member may be represented as an inner plate member. If the other of the first plate member and the second plate member is located in the outer space of the third space, the plate member may be represented as an outer plate member. For example, the inner space of the third space may be a storage compartment of a refrigerator. The outer space of the third space may be an external space of a refrigerator.

[0133] The above vacuum insulation may further include a supporting unit that maintains the third space.

[0134] The vacuum insulation may further include a conductive resistance sheet connecting the first plate member and the second plate member to each other in order to reduce the amount of heat transfer between the first plate member and the second plate member.

[0135] At least a portion of the conductive resistance sheet may be positioned to face the third space. The conductive resistance sheet may be positioned between the edge of the first plate member and the edge of the second plate member. The conductive resistance sheet may be positioned between the surface of the first plate member facing the first space and the surface of the second plate member facing the second space. The conductive resistance sheet may be positioned between the side portion of the first plate member and the side portion of the second plate member.

[0136] At least a portion of the above-mentioned conductive resistance sheet may be formed to extend in substantially the same direction as the direction in which the first plate member extends.

[0137] The thickness of the conductive resistance sheet may be configured to be thinner than at least one of the first plate member and the second plate member. The thinner the thickness of the conductive resistance sheet, the more the heat transfer occurring between the first plate member and the second plate member can be reduced.

[0138] Although the thinner the conductive resistance sheet, the advantage is that heat transfer can be reduced, but there may be difficulties in joining the conductive resistance sheet between the first plate member and the second plate member.

[0139] One end of the conductive resistance sheet may be positioned to overlap at least a portion with the first plate member. This is to provide a space for joining the one end of the conductive resistance sheet and the first plate member. Here, the joining method may include welding.

[0140] The other end of the conductive resistance sheet may be positioned to overlap at least a portion with the second plate member. This is to provide a space for joining the other end of the conductive resistance sheet and the second plate member. Here, the joining method may include welding.

[0141] As another embodiment replacing the conductive resistance sheet, the conductive resistance sheet may be omitted, and the thickness of either the first plate member or the second plate member may be thinner than the other. In this case, the thickness of either one may be thicker than the conductive resistance sheet. In this case, the length of either one may be longer than the length of the conductive resistance sheet. This configuration can reduce the increase in heat transfer resulting from the omission of the conductive resistance sheet. Additionally, this configuration can reduce the difficulty in joining the first plate member and the second plate member.

[0142] At least a portion of the first plate member and at least a portion of the second plate member may be arranged to overlap. This is to provide a space for joining the first plate member and the second plate member. An additional cover may be placed over either the first plate member or the second plate member that is thinner. This is to protect the thinned plate member.

[0143] The above vacuum insulation may additionally include an exhaust port for discharging gas from the vacuum space.

[0144] In the following, as an example, a vacuum insulation module to which the technology of the vacuum insulation body is applied is presented as an article that can be widely used in insulating articles such as refrigerators.

[0145] The above vacuum insulation module is a modular component designed to enable high insulation performance through low vacuum pressure to be utilized in a wide range of insulated products. The above vacuum insulation module can be applied as a component to the above vacuum insulation body and insulated products such as refrigerators. Although the above vacuum insulation body and the above vacuum insulation module can be used similarly, the vacuum insulation module differs from the vacuum insulation body in that it is more versatile and provides vacuum insulation effects simply by being mounted in various other applications.

[0146] In the description of the following embodiments, a refrigerator is provided using the vacuum insulation module. The application of the vacuum insulation module is not limited to a refrigerator and can be applied to various vacuum insulation products. In the following description, the vacuum insulation products are described as having preferred uses under the names "door" and "body," but this is for the purpose of understanding the content and should not be interpreted restrictively based on the names; it is understood that they can be used for various other purposes. Furthermore, expressions such as "first" and "second" may be used to indicate distinct meanings rather than to indicate order or importance.

[0147] In the description of the following embodiments, the vacuum insulation module may be provided as a modularized member, specifically as a wall member having a vacuum space inside, but is not limited thereto; additional parts may be included in the periphery, etc., or additional processing may be performed. However, since the member is characterized by having a two-dimensional extension structure to provide an insulation wall, the description will focus on the cross-sectional view, with particular emphasis placed on the characteristic parts within the cross-section.

[0148] FIG. 8 is a cross-sectional view of the first door vacuum insulation module.

[0149] Referring to FIG. 8, the first door vacuum insulation module (100) is a modular vacuum insulation body that can be preferably applied to the door of a refrigerator.

[0150] In the first door vacuum insulation module (100) above, components such as a plate member (10)(20), a supporting unit (30), a radiation resistance sheet (32), a bar (31), a support plate (35), and a conductivity resistance sheet (60), which are applied to the vacuum insulation body already described, are applied. This is also the case for other vacuum insulation modules. However, for convenience of explanation, different numbers are assigned to ensure a more accurate description. For example, the first plate member may correspond to an inner cover, and the second plate member may correspond to an outer cover. A number of other components, such as an exhaust port for applying vacuum pressure, may be included, but may be omitted from the description.

[0151] The first door vacuum insulation module (100) is provided with an inner cover (101) and an outer cover (201) that can be positioned corresponding to the inner space and outer space of the insulation space, respectively. The inner space of the inner and outer covers (101) (201) can provide a vacuum space with vacuum pressure as seen in the vacuum insulation body. A supporting unit (30) can be installed to support the interior of the vacuum space, and a radiation resistance sheet can be provided to resist radiant heat transfer.

[0152] The end of the outer cover (201) may have a bent portion (2011) that is bent toward the inner cover (101). It may further have a side portion (2012) that extends inward from the bent portion (2011). The outer cover (201) as a whole may have an outer surface portion (2013) corresponding to the outer space, a side portion (2012) covering the side, and a bent portion (2011) in which the side portion and the outer surface portion are bent and connected to each other.

[0153] The outer surface (2013), the bent portion (2011), and the side portion (2012) may be provided as a single plate member. Here, the single plate member may be formed as a single unit by processing it using a method such as drawing, or formed as a single unit through an integration method such as welding.

[0154] A conductive resistance sheet (60) may be provided between the end of the side portion (2012) of the outer cover (201) and the end of the inner cover (101). Both ends of the conductive resistance sheet (60) may be sealed and integrated with the covers (101) (201) by a fastening method such as welding. Although not illustrated, the conductive resistance sheet (60) may be provided in a configuration that is recessed to a predetermined depth toward the vacuum space to reduce conductive heat.

[0155] The outer cover (201) and the inner cover (101) may be provided with metal to have sufficient strength.

[0156] The outer cover (201) is provided to be larger than the inner cover (101). According to this configuration, when the vacuum insulation module provides an insulating material having an internal receiving space, it can provide convenience for fastening or protect the components inside the vacuum insulation module. The flat end of the outer cover (210) may be extended further outward compared to the inner cover (101). Accordingly, the extended end can be bent and used as a fastening part, and a side part can be provided to create the vacuum space.

[0157] A first reinforcing frame (102) may be provided on the inner surface of the edge portion where the outer cover (201) including the above-mentioned bending portion (2011) is bent. The reinforcing frame (102) may be provided to reduce shape deformation caused by the force resulting from the difference in atmospheric pressure and the pressure of the vacuum space portion of the edge portion of the first door vacuum insulation module (100). The reinforcing frame can compensate for the distortion of force caused by the difference in uneven external force due to the conductive resistance sheet (60).

[0158] The first reinforcing frame (102) may be provided to reinforce strength so as to prevent deformation, such as twisting or bending, of the entire shape of the first door vacuum insulation module (100). Although not illustrated, the first reinforcing frame (102) may be provided as a closed curve structure surrounding the edge of the first door vacuum insulation module (100).

[0159] The first door vacuum insulation module (100) is used in the door of a refrigerator or the like and can be substantially provided on the front surface of the door, except for parts for insulation or sealing that cannot be avoided. Thus, after fixing the first door vacuum insulation module (100) to a predetermined frame, the door can be completed simply by installing additional parts such as a basket.

[0160] The first door vacuum insulation module (100) above experiences a change in shape due to an imbalance in the pressure applied to the conductive resistance sheet (60). A second embodiment to improve this problem is described as the second door vacuum insulation module (110).

[0161] In the description of the second door vacuum insulation module (110) above, any parts that are not specifically mentioned may be applied as described in the first door vacuum insulation module (100). Furthermore, any parts of the description of the first door vacuum insulation module (100) that are applicable may also be applied as described in the main body vacuum insulation module.

[0162] FIG. 9 is a cross-sectional view of the corner portion of the second door vacuum insulation module.

[0163] Referring to FIG. 9, the length of the side portion (2012) of the second door vacuum insulation module (110) is formed to be significantly shorter than that of the first door vacuum insulation module (100). A conductive resistance sheet (60) is located on the remaining side portion of the second door vacuum insulation module (110). The entire conductive resistance sheet (60) may be installed on the side of the second door vacuum insulation module (110). Here, the side is a concept distinct from the inner and outer surfaces of the second door vacuum insulation module, and it is more accurate to define it as a concept that distinguishes the location of the force applied to the second door vacuum insulation module (110) due to the pressure difference between atmospheric pressure and vacuum space.

[0164] As a result, the pressure difference applied in the vertical direction to the rim of the door vacuum insulation module can be reduced, and uneven forces can be distributed. Consequently, deformation of the rim can be reduced.

[0165] As the installation position of the conductive resistance sheet (60) moves outward, that is, toward the edge, the change in the shape of the perimeter of the second door vacuum insulation module (110) may be reduced. However, an insulating material of a predetermined thickness must be placed between the conductive resistance sheet (60), where a large temperature difference occurs, and the external space. This may later cause a problem where the total planar area of ​​the door where the second door vacuum insulation module (110) is installed increases.

[0166] The position of the above-mentioned conductive resistance sheet (60) can be determined by considering both the shape deformation and the overall size of the door. In the drawing, the concept that the position of the conductive resistance sheet (60) can be moved outward is indicated by an arrow.

[0167] In the portion connecting the lower portion of the above-mentioned conductive resistance sheet (60) and the above-mentioned outer cover (201), a member made of the same material as the outer cover (201) may be integrated with the outer cover (201) to provide a part of the outer cover (201).

[0168] Supporting units (301) and (302) with different heights of bars (31) are installed on the inside and outside of the above-mentioned conductive resistance sheet (60), so that no problem can occur in forming the vacuum pressure of the vacuum space.

[0169] The first door vacuum module and the second door vacuum module can be applied as thermal insulation members to the door of a refrigerator, etc. The difference between the first door vacuum module and the second door vacuum module will be explained in more detail later using FIGS. 13 to 15.

[0170] The following describes a vacuum insulation module that can be preferably applied to the main body. Any description of the door vacuum insulation module that is applicable to the main body vacuum insulation module shall be applied as is.

[0171] FIG. 10 is a cross-sectional view of the first main body vacuum insulation module.

[0172] Referring to FIG. 10, the first main body vacuum insulation module (120) includes an outer cover (121) corresponding to an outer space, an inner cover (122) corresponding to an inner space, a conductive resistance sheet (123) that provides the interior of the inner cover (122) and the outer cover (121) as a vacuum space, and a supporting unit that can maintain the shape of the vacuum space.

[0173] The outer cover (121) extends further outward from the vacuum space to provide a fastening edge (124). The first main body vacuum insulation module (120) may be provided in a two-dimensional planar structure and in a rectangular shape, and may extend a certain distance outward from all sides of the rectangle.

[0174] The above-mentioned fastening edge (124) is a part for allowing the first main body vacuum insulation module (120) to be fastened to another member, and although it is illustrated as a flat shape in the drawing, it may be provided in a folded shape or a bent shape.

[0175] The above-mentioned fastening edge (124) may or may not be the same for all edge portions. For example, one corner of the rectangular edge may be provided in a straight shape, and another corner may be provided in a bent shape. As another example, one corner may be provided long and another corner may be provided short. This difference in configuration may vary depending on the type of insulating material in which the first main vacuum insulation is employed and the location where the first main vacuum insulation is applied.

[0176] In order to correspond to the outer cover (121) having the above-mentioned fastening edge (124), the conductive resistance sheet (123) may be folded to a predetermined length at the portion in contact with the inner surface of the outer cover (121). By this structure, the conductive resistance sheet (123) can be sealed with the outer cover (121) and the inner cover (122) by a method such as welding.

[0177] FIG. 11 is a cross-sectional view of the second main body vacuum insulation module. The description of the second main body vacuum insulation module focuses on the parts that differ from the first main body vacuum insulation module.

[0178] Referring to FIG. 11, at the location where the inner cover (122) and the conductive resistance sheet (60) are placed in the first main body vacuum insulation module (120), the inner cover (132) is placed as a thin plate-like member having the material of the conductive resistance sheet. In other words, in the second main body vacuum insulation module (130), the inner cover (132) can perform the role of the conductive resistance sheet over a longer distance.

[0179] Even if the inner cover is provided as a thin plate-shaped member, since the internal supporting unit (30) is placed between the outer cover (131) and the inner cover (132), there is no problem with the role of the insulating member utilizing the vacuum space.

[0180] Since the outer cover (131) is provided as a thick plate-shaped member, there is no problem with the role of the module that can maintain the shape of the second main body vacuum insulation module (130).

[0181] The above-mentioned fastening edge (134) can be provided in the same way as the first main body vacuum insulation module (120), and its role can be applied in the same way.

[0182] FIG. 12 is a cross-sectional view of the third main body vacuum insulation module. The description of the third main body vacuum insulation module focuses on the parts that differ from the first and second main body vacuum insulation modules.

[0183] Referring to FIG. 12, the third main body vacuum insulation module (130) includes an outer cover (131) corresponding to an outer space, an inner cover (132) corresponding to an inner space, and a supporting unit (30) that provides the interior of the inner cover (132) and the outer cover (131) as a vacuum space.

[0184] The inner cover (132) and the outer cover (131) may be made of a non-metallic material such as resin, and PC or PPS with a low amount of outgassing may be used as the type of resin. A thermal conductivity resistance coating layer may be formed on the surface of the inner cover (132) and the outer cover (131) to minimize heat conduction.

[0185] The inner cover and the outer cover are manufactured as separate parts and can be sealed with an adhesive while the supporting unit (30) is inserted. The adhesive surfaces of the inner cover (132) and the outer cover (131) may have a predetermined area to prevent the intrusion of external air, and an epoxy-based adhesive with low outgassing, high strength, and excellent resistance to high heat may be used as the adhesive.

[0186] The fastening edge (144) may be manufactured in the shape desired by the module during the molding of the resin.

[0187] The above-described main body vacuum insulation module can be provided on a wall surface that provides the main body of the refrigerator and can be conveniently used in the manufacture of the refrigerator. The manufacture of the main body using the above-described main body vacuum insulation module will be described later through FIGS. 18 to 23.

[0188] Below, the differences between the first and second door vacuum insulation modules mentioned above are explained in more detail based on the difference in force due to pressure.

[0189] FIG. 13 is a diagram illustrating the pressure of the first door vacuum insulation module.

[0190] Referring to FIG. 13, the vacuum space of the first door vacuum insulation module (100) has a significantly lower pressure than atmospheric pressure. Therefore, a contraction force corresponding to atmospheric pressure is applied to the cover (101)(201) and the conductive resistance sheet (60). The contraction force acts as a force perpendicular to the surface of the cover and the conductive resistance sheet and can be a force that contracts the entire first door vacuum insulation module (100).

[0191] Unlike the above cover (101)(201), the above conductivity resistance sheet (60) is a thin sheet and has low strength. The above sheet is easily deformed and cannot maintain its original shape on its own. Furthermore, it is not supported by the supporting unit (30) to resist conduction. Consequently, the part where the above conductivity resistance sheet is placed does not perform the role of a frame that resists the deformation that the above shrinkage force applies to the first door vacuum insulation module (100).

[0192] In this state, the point where the deformation force generated in the first door vacuum insulation module (100) is greatest is the point designated as "P," and a moment equivalent to the contraction force applied to the side portion (2012) of the outer cover (201) can be concentrated at the point "P." The point "P" is the point where the bar (31) of the supporting unit (30) is last supported, and a moment caused by the side portion (2012) can be concentrated at this point.

[0193] Due to the concentration of the above moment, the rim of the first door vacuum insulation module (100) can be lifted upward relative to the drawing.

[0194] Figures 14 and 15 are drawings simulating the deformation of the first door vacuum insulation module and the second door vacuum insulation module, respectively.

[0195] Referring to FIG. 14, the outer cover (201) can be seen to be significantly deformed with the “P” point as the starting point of the deformation, and its end raised by 9.2 mm.

[0196] In contrast, referring to FIG. 15, it can be seen that the end of the outer cover (302) of the second door vacuum insulation module (110) is raised by 1.2 mm.

[0197] As shown in Fig. 15, the main reason the amount of rise in the second door vacuum insulation module (110) is reduced is that the conductive resistance sheet (60) is installed in a direction parallel to the side part (2012).

[0198] To explain more specifically, this is because the load due to atmospheric pressure applied to the side portion (2012) is absorbed as much as possible by the deformation of the conductive resistance sheet (60), thereby distributing the load to the upper and lower portions of the conductive resistance sheet (60).

[0199] However, if the above-mentioned conductive resistance sheet (60) covers the entire side portion (2012), a thick insulating material is required to insulate the outside of the conductive resistance sheet, and the size of the door may become excessively large. This problem cannot be ignored due to the dew that forms near the conductive resistance sheet where there is a large temperature difference.

[0200] To resolve this problem, in the second door vacuum insulation module, a portion of the side portion (2012) is covered by an outer cover (201), and the interior is maintained by the second support unit (302).

[0201] In this case, since the outer side of the conductive resistance sheet can be insulated by foam insulation or the like, the size of the door can be avoided. Additionally, since the moment generated on the side provided by the outer cover (201) can be distributed and applied to the entire supporting unit (301)(302), the amount of deformation can be reduced. Ultimately, the purpose of reducing condensation and the problem of reducing the size of the door can be achieved simultaneously.

[0202] In the case of the second door vacuum insulation module above, the question of how much the position of the conductive resistance sheet (60) is moved toward the edge can be determined according to the degree to which the two problems of dew formation and door size are resolved.

[0203] Below, a refrigerator door to which a door vacuum insulation module according to an embodiment is applied is described. In the description of the embodiment, the first door vacuum insulation module was exemplified, but it is obvious that the second door vacuum insulation module can also be applied.

[0204] FIG. 16 is an exploded perspective view of a door to which a door vacuum insulation module according to an embodiment is applied, and FIG. 17 is a cross-sectional view of the edge portion of the door.

[0205] Referring to FIGS. 16 and 17, an outer cover (201), a first reinforcing frame (102), a supporting unit (30), a conductive resistance sheet (60), and an inner cover (101) forming the first door vacuum insulation module (100) are provided. Although the first door vacuum insulation module (100) is separated from each other, it can be manufactured and supplied at a manufacturing site separate from the door assembly line.

[0206] The inner cover (101) may further be provided with a second reinforcing frame (103) having at least two sides inclined toward each other. The second reinforcing frame (103) not only reinforces the overall strength of the first door vacuum insulation module (100), but also performs the function of ensuring that the inner panel (152) forming the door is fastened to the first door vacuum insulation module (100).

[0207] An external panel (151) may be further provided in front of the first door vacuum insulation module (100). The external panel (151) may be fixed to the outer cover (201) by means such as adhesive. Even if there is a curvature on the surface of the outer cover (201) caused by the supporting unit (30), it may not be visible from the outside due to the external panel (151).

[0208] The outer panel (151) and the inner panel (152) can be connected to each other. One end of the inner panel (152) can be connected to the outer panel (151), and the other end can be connected to the second reinforcing frame (103). The second reinforcing frame (103) can be connected to the inner panel (152) while connected to the inner cover (101). The inner panel (152) can be made of resin, and the outer panel (151) can be made of metal.

[0209] The space created by the inner panel (152) and the outer panel (151) is filled with a foaming material (153) to reinforce the thermal insulation of the door frame and reinforce the overall strength of the door. In order to prevent the outer panel (151) and the outer cover (201) from separating from each other during the foaming of the foaming material, it is preferable that the contact ends of the outer panel (151) and the outer cover (201) be integrated by methods such as bonding and welding.

[0210] A gasket (154) may be attached to the inner panel (152) to ensure perfect sealing when the door comes into contact with the main body. This is more preferable because the insulating space formed on the adjacent outer side of the conductive resistance sheet (60) can be increased by the gasket (154).

[0211] An upper panel (155) and a lower panel (156) are provided at the top and bottom of the door, respectively, to accurately define the filling space of the foaming member (153) together with the outer panel (151) and the inner panel (152), and to perform the foaming process. Before the foaming process is performed, components such as wires and sensors to be accommodated in the inner space where the foaming member is placed can be pre-accommodated therein.

[0212] Hereinafter, a refrigerator body to which a body vacuum insulation module according to an embodiment is applied is described. In the description of the embodiment, the first body vacuum insulation module is exemplified, but it is obvious that the second body vacuum insulation module or the third body vacuum insulation module may also be applied. Likewise, different body vacuum insulation modules may be mixed and used in a single insulation article.

[0213] FIG. 18 is a perspective view of a refrigerator to which a main body vacuum insulation module according to an embodiment is applied, FIG. 19 is a cross-sectional view of the main body of FIG. 18 cut in the A-A' direction according to one embodiment, FIG. 20 and FIG. 21 are cross-sectional views of the main body of FIG. 18 cut in the A-A' direction according to another embodiment, and FIG. 22 and FIG. 23 are cross-sectional views of the main body of FIG. 18 cut in the B-B' direction according to another embodiment.

[0214] Here, FIGS. 18 to 22 are drawings showing the manufacturing process of the main body, FIGS. 18 to 21 are drawings showing the sequential combination process of the main body vacuum insulation module applied to the rear of the main body and the main body vacuum insulation module applied to the side of the main body, and FIGS. 22 and 23 are drawings showing the sequential combination process of the main body vacuum insulation module applied to the upper surface of the main body and the main body vacuum insulation module applied to the side of the main body.

[0215] In the following description, the main body vacuum insulation module is described by abbreviation according to the location of application. For example, the first main body vacuum insulation module applied to the upper surface is abbreviated as the upper surface vacuum insulation module.

[0216] Referring to FIG. 19, the rear vacuum insulation module (301), the left side vacuum insulation module (302), and the right side vacuum insulation module (303) are aligned. The description of the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be likewise applied to the description of the rear vacuum insulation module (301) and the right side vacuum insulation module (303).

[0217] Additional components may be provided in the rear vacuum insulation module (301). In another aspect, the additional components may be understood as additional components of the rear vacuum insulation module (301).

[0218] The above additional member may further include a rear fastening edge (401) provided on the outer cover (121).

[0219] The above rear fastening edge (401) can be extended from the outer cover (121).

[0220] The above rear fastening edge (401) may extend from the point where the outer cover (121) and the conductive resistance sheet (123) are joined.

[0221] The rear fastening edge (401) may be formed in substantially the same direction as the surface of the outer cover (121) facing the third space. The rear fastening edge (401) may extend in a direction toward the right side vacuum insulation module (303).

[0222] The above rear fastening edge (401) may include a first part (4011) and a second part (4012).

[0223] The first portion of the rear fastening edge (401) may be connected to the outer cover (121). The second portion of the rear fastening edge (401) may be a portion extending from the first portion in a direction away from the outer cover (121).

[0224] One end of the second part (4012) of the rear fastening edge (401) can be connected to the first part (4011). The other end of the second part of the rear fastening edge (401) can be spaced apart from the right side vacuum insulation module (303) by a predetermined distance.

[0225] The above additional member may further include an inner fastening frame (402) provided on the outer side of the inner cover (122).

[0226] The inner fastening frame (402) may be provided to cover the edge portion of the inner cover (122) or to overlap the edge portion of the inner cover (122).

[0227] This configuration can reduce deformation of the edge portion of the inner cover (122) by external force.

[0228] The inner fastening frame (402) may be provided to cover the edge portion of the conductive resistance sheet (123) or to overlap with the conductive resistance sheet (123). This configuration can protect the conductive resistance sheet (123), which is formed as a thin film, from being damaged.

[0229] The inner fastening frame (402) may be provided to cover the portion where the inner cover (122) and the conductive resistance sheet (123) are joined, or the inner fastening frame (402) may be provided to overlap the portion where the inner cover (122) and the conductive resistance sheet (123) are joined. This configuration can reduce the risk of the joint between the conductive resistance sheet (123) and the inner cover (122) being damaged or separated by external force.

[0230] A second insulation module may be disposed on the outside of the conductive resistance sheet (123). One side of the conductive resistance sheet (123) may be disposed to face the third space, and the other side may be disposed to face the second insulation module. This configuration can reduce dew generated around the conductive resistance sheet (123) or reduce damage to the conductive resistance sheet (123) caused by external forces. The conductive resistance sheet (123) may be disposed to be in contact with the second insulation module.

[0231] The inner fastening frame (402) may be provided to overlap at least a portion of the first part (4011) of the rear fastening edge (401). The rear vacuum insulation module (301) is robust against external forces. This is because the interior of the rear vacuum insulation module (301) has a vacuum space formed therein and a supporting unit is provided therein. In contrast, the rear fastening edge (401) extending from the rear vacuum insulation module (301) may be vulnerable to deformation due to external forces. If the inner fastening frame (402) is provided to overlap at least a portion of the first part (4011) of the rear fastening edge (401), deformation due to external forces can be reduced.

[0232] A second insulation module may be placed in the space formed between the inner fastening frame (402) and the rear fastening edge (401). In this way, if the second insulation module is placed in the space formed between the inner fastening frame (402) and the rear fastening edge (401), the deformation of the rear fastening edge (401) due to external force can be further reduced.

[0233] The inner fastening frame (402) may extend from the rear vacuum insulation module (301) toward the right side vacuum insulation module (303). At least a portion of the inner fastening frame (402) may be provided on the outer surface of the right side vacuum insulation module (303).

[0234] There may be separate fastening members (441)(442) to combine the first and second insulation modules. The fastening member may be fastened to the second insulation module by penetrating at least a portion of the inner fastening frame (402). The fastening member may be positioned so as not to come into contact with the conductive resistance sheet (123). The fastening member may be positioned at a predetermined distance from the conductive resistance sheet (123). The fastening member may be positioned at a location closer to the second insulation module than the third space. The fastening member may be positioned at a predetermined distance from the conductive resistance sheet toward the second insulation module. This configuration can reduce damage to the conductive resistance sheet (123) during the process of combining the fastening member. Additionally, when the above fastening member comes into contact with the conductive resistance sheet (123), the first and second fastening members (441) (442) form another heat transfer path, which may cause a problem of increased dew around the conductive resistance sheet (123).

[0235] The above fastening member may be fastened to the second insulation module by penetrating at least a portion of the inner fastening frame (402). The above fastening member may be fastened to the second insulation module by penetrating at least a portion of the outer fastening frame (403) to be described later.

[0236] The inner fastening frame (402) may include a first part (4021) and a second part (4022). The inner fastening frame (402) may include a first part (4021) and a second part (4022) to surround the corner of the wall forming the first space. This configuration can make the wall formed by the first insulation module more robust. This is because the corner portion of the wall forming the first space may be more vulnerable to external forces.

[0237] A portion of the first part (4021) of the inner fastening frame (402) may be positioned to contact the inner cover (122) of the rear vacuum insulation module (301), and another portion of the first part of the inner fastening frame (402) may be positioned to contact the second insulation module. This configuration can make the connection between the first and second insulation modules secure.

[0238] In the case where there are multiple first insulation modules, the first part (4021) of the inner fastening frame (402) may be connected to the inner cover of any one of the multiple first insulation modules. The second part (4022) of the inner fastening frame (402) may be configured to be connected to the inner cover of another of the multiple first insulation modules.

[0239] In the case where there are multiple first insulation modules, the first part of the inner fastening frame (402) may be configured to contact the inner cover of any one of the multiple first insulation modules. The second part of the inner fastening frame (402) may be configured to contact the inner cover of another of the multiple first insulation modules.

[0240] The inner fastening frame (402) can be placed outside the vacuum space to allow vacuum insulation modules to be fastened to one another and can perform the role of reinforcing the strength of the main body.

[0241] The first portion may be provided to cover the edge portion of the inner cover (122) of the rear vacuum insulation module (301). The first portion may be provided to overlap the edge portion of the inner cover (122) of the rear vacuum insulation module (301).

[0242] The first portion may be provided to cover the edge portion of the conductive resistance sheet (123) of the rear vacuum insulation module (301). The first portion may be provided to overlap with the conductive resistance sheet (123) of the rear vacuum insulation module (301).

[0243] The first part may be provided to cover the portion where the inner cover (122) of the rear vacuum insulation module (301) and the conductive resistance sheet (123) of the rear vacuum insulation module (301) are joined. The first part may be provided to overlap with the portion where the inner cover (122) of the rear vacuum insulation module (301) and the conductive resistance sheet (123) of the rear vacuum insulation module (301) are joined.

[0244] The second portion may be provided to cover the edge portion of the inner cover (122) of the right side vacuum insulation module (303). The second portion may be provided to overlap with the edge portion of the inner cover (122) of the right side vacuum insulation module (303).

[0245] The second portion may be provided to cover the edge portion of the conductive resistance sheet (123) of the right side vacuum insulation module (303). The second portion may be provided to overlap with the conductive resistance sheet (123) of the right side vacuum insulation module (303).

[0246] The second part may be provided to cover the portion where the inner cover (122) of the right side vacuum insulation module (303) and the conductive resistance sheet (123) of the right side vacuum insulation module (303) are joined. The second part may be provided to overlap with the portion where the inner cover (122) of the right side vacuum insulation module (303) and the conductive resistance sheet (123) of the right side vacuum insulation module (303) are joined.

[0247] There may be a separate fastening member to combine the first and second insulation modules. The first fastening member (441) may be fastened to the second insulation module by penetrating the first part (4021) of the inner fastening frame (402). The second fastening member (442) may be fastened to the second insulation module by penetrating the second part (4022) of the inner fastening frame (402). The first and second fastening members may be positioned so as not to come into contact with the conductive resistance sheet (123). The first and second fastening members may be positioned at a predetermined distance from the conductive resistance sheet (123). The first and second fastening members may be positioned at a location closer to the second insulation module than the third space. The first and second fastening members may be positioned at a predetermined distance from the conductive resistance sheet in the direction of the second insulation module.

[0248] The first insulation module may further include an outer fastening frame (403) provided to be connected to the rear fastening edge (401). The outer fastening frame (403) may be provided on the outer surface of a second part of the rear fastening edge (401).

[0249] The outer fastening frame (403) may include a first part (4031) and a second part (4032). The outer fastening frame (403) may include a first part and a second part to surround the corner of the wall forming the second space. The outer fastening frame (403) may be placed outside the vacuum space to allow vacuum insulation modules to be fastened to one another and may perform the role of reinforcing the strength of the main body. The outer fastening frame (403) may be placed in the internal space formed by the rear fastening edge (401) of the rear vacuum insulation module (301) and the side rear fastening edge (404) of the right side vacuum insulation module (303).

[0250] The first portion may be provided to cover the edge portion of the rear fastening edge (401) of the rear vacuum insulation module (301). The first portion may be provided to overlap with the edge portion of the rear fastening edge (401) of the rear vacuum insulation module (301).

[0251] The first part above may be provided so as to be spaced apart from the conductive resistance sheet (123) of the right side vacuum insulation module (303) by a predetermined distance. The first part above may be provided so as to overlap with the conductive resistance sheet (123) of the right side vacuum insulation module (303).

[0252] There may be a separate fastening member to combine the first and second insulation modules. The third fastening member (443) can be fastened to the second insulation module by penetrating the rear fastening edge (401) of the rear vacuum insulation module (301).

[0253] The second part may be provided so as to be spaced apart from the conductive resistance sheet (123) of the right side vacuum insulation module (303) by a predetermined distance. The second part may be provided so as to overlap with the conductive resistance sheet (123) of the right side vacuum insulation module (303).

[0254] Additional components are provided in the above right side vacuum insulation module (303). For example, a side rear fastening edge (404) provided on the outer cover (121) may be included. The description of the part where the side rear fastening edge (404) performs the same function as the rear fastening edge (401) will be omitted.

[0255] The additional member may further include a rear bending edge (405) forming the rear end of the side rear connecting edge (404). The rear bending edge (405) may be positioned to cover at least a portion of the rear connecting edge (401). The rear bending edge (405) may be positioned to overlap with the rear connecting edge (401). The rear bending edge (405) may be joined to the rear connecting edge (401) at the overlapping portion. The joining method may be welding or bonding. The joining method may be a method using a separate connecting member. As a variation example, the rear bending edge (405) may be removed from the right side vacuum insulation module (303), and the rear bending edge may be formed on the rear vacuum insulation module (301).

[0256] There may be a separate fastening member to combine the first and second insulation modules. The third fastening member (443) can be fastened to the second insulation module by penetrating the rear fastening edge (401) of the rear vacuum insulation module (301).

[0257] The third fastening member can be fastened to the second insulation module by penetrating the rear end bending edge (405) forming the rear end of the side rear fastening edge (404).

[0258] The fourth fastening member (444) can be fastened to the second insulation module by penetrating the side rear fastening edge (404) of the right side vacuum insulation module (303).

[0259] The above additional member may further include an outer fastening frame (403) that is fastened to the side rear fastening edge (404) with a predetermined gap from the rear bending edge (405). Since the description of the outer fastening frame (403) is as described above, the description will be omitted. The fastening edges (401) (404), etc., do not perform the function of maintaining the vacuum of the vacuum space, but rather perform the function of fastening with other parts.

[0260] The left side vacuum insulation module (302) can be moved to the right and inserted toward the rear vacuum insulation module (301). During insertion, the rear fastening edge (401) can be inserted into the gap between the outer fastening frame (403) and the rear end bending edge (405). By making the insertion, the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be properly positioned. After being positioned, each frame (402)(403) and the fastening edge (401)(404)(405) can be fastened to each other. Methods such as welding and bonding may be applied for fastening. The frames (402)(406) can simultaneously achieve the purpose of fastening between members, the purpose of increasing the strength of the main body vacuum insulation module, and the purpose of increasing the overall strength of the main body.

[0261] Referring to FIG. 19, the cross-sectional structure of the main body provided by the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be seen. In the space of the contact portion between the rear vacuum insulation module (301) and the left side vacuum insulation module (302), a foaming member (406) can be filled while an additional member (407), such as wiring, is inserted.

[0262] As a variation, a second insulation module with additional components such as wiring inserted can be manufactured in advance, and then the second insulation module can be inserted into the space of the contact portion between the rear vacuum insulation module (301) and the left side vacuum insulation module (302).

[0263] In another variation, a second insulation module can be prefabricated with a through hole formed therein into which additional components, such as wiring, can be inserted. The fabricated second insulation module can be inserted into the space of the contact portion between the rear vacuum insulation module (301) and the left side vacuum insulation module (302). After the second insulation module is inserted into the space, additional components, such as wiring, can be inserted into the through hole. Examples of additional components, such as wiring, include electrical wires, refrigerant pipes, cold air ducts, and water pipes. If a through hole is formed in the first insulation module, vacuum leakage may occur inside, and there may be the inconvenience of having to perform additional welding to reduce the vacuum leakage.

[0264] A foaming material may be filled into the front end of the above-mentioned left-side vacuum insulation module (302) and the above-mentioned right-side vacuum insulation module (303) while a heating element (408) is embedded therein. As another variation, a second insulation module may be manufactured in advance with a through hole formed therein into which a heating element (408) can be inserted. The heating element may include a hot line or a heater.

[0265] The second insulation module, exemplified by the foam member (406) above, not only performs insulation but also reinforces the strength of the main body and ensures that the gaps between each vacuum insulation module are perfectly sealed. Such an operation can be said to be achieved by the main body vacuum insulation module according to the embodiment.

[0266] Referring to FIG. 20, the rear vacuum insulation module (301), the left side vacuum insulation module (302), and the right side vacuum insulation module (303) are aligned. The description of the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be likewise applied to the description of the rear vacuum insulation module (301) and the right side vacuum insulation module (303).

[0267] Additional components are provided in the rear vacuum insulation module (301). For example, a rear fastening edge (401) provided on the outer cover (121) and an inner fastening frame (402) provided on the outer surface of the inner cover (122) may be included. The fastening frame may be placed outside the vacuum space to allow the vacuum insulation modules to be fastened to one another and may serve to reinforce the strength of the main body.

[0268] Additional components are provided in the above-mentioned left-side vacuum insulation module (303). For example, it may include a side rear joint edge (404) provided on the outer cover (121), a rear end bending edge (405) forming the rear end of the side rear joint edge (404), and an outer fastening frame (403) fastened to the side rear joint edge (404) with a predetermined distance from the rear end bending edge (405).

[0269] The above fastening edges (401)(404)(404), etc., do not perform the function of maintaining the vacuum of the vacuum space, but perform the function of fastening with other parts.

[0270] The left side vacuum insulation module (302) can be moved to the right and inserted toward the rear vacuum insulation module (301). During insertion, the rear fastening edge (401) can be inserted into the gap between the outer fastening frame (403) and the rear end bending edge (405). By making the insertion, the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be properly positioned. After being positioned, each frame (402)(403) and the fastening edge (401)(404)(405) can be fastened to each other. Methods such as welding and bonding may be applied for fastening.

[0271] The above frames (402)(403) can achieve the purpose of fastening between members, the purpose of increasing the strength of the main body vacuum insulation module, and the purpose of increasing the overall strength of the main body.

[0272] Referring to FIG. 21, the cross-sectional structure of the main body provided by the rear vacuum insulation module (301) and the left side vacuum insulation module (302) can be seen. A foaming member (406) can be filled into the space of the contact portion between the rear vacuum insulation module (301) and the left side vacuum insulation module (302) while additional members such as wiring are inserted.

[0273] An example of modification by a second insulation module replacing the above-mentioned foam member will be omitted from the description as previously described.

[0274] A foaming material can be filled into the front ends of the above-mentioned left side vacuum insulation module (302) and the above-mentioned right side vacuum insulation module (303) while a hot line (408) is built in.

[0275] The above foam member (406) not only performs thermal insulation but also reinforces the strength of the main body and ensures that the gaps between each vacuum insulation module are perfectly sealed. It can be said that such an action is achieved by the main body vacuum insulation module according to the embodiment.

[0276] Referring to FIG. 22, the upper vacuum insulation module (304), the left side vacuum insulation module (302), and the right side vacuum insulation module (303) are aligned. The description of the upper vacuum insulation module (304) and the left side vacuum insulation module (302) can be similarly applied to the description of the upper vacuum insulation module (304) and the right side vacuum insulation module (303).

[0277] Additional components are provided in the upper surface vacuum insulation module (304). For example, it may include an upper surface fastening edge (411) provided on the outer cover (121), an upper bending edge (412) that forms the end portion of the upper surface fastening edge (411) and is bent, and an outer fastening frame (403) that is fastened to the upper surface fastening edge (411) with a predetermined distance from the upper bending edge (412). Additionally, an inner fastening frame (402) provided on the inner cover (122) may be included. The inner fastening frame (402) may also be provided on the left side vacuum insulation module (303).

[0278] Additional components are provided in the above-mentioned left-side vacuum insulation module (303). For example, a side upper joint edge (410) provided on the outer cover (121) may be included.

[0279] The upper vacuum insulation module (304) can be moved downward toward the left side vacuum insulation module (303) and inserted. At this time, the rear vacuum insulation module (301) may be connected to the left side vacuum insulation module (303). The upper portion of the rear vacuum insulation module (301) may be provided with a structure similar to the upper portion of the left side vacuum insulation module (303) of FIG. 21.

[0280] While the upper vacuum insulation module (304) is being inserted into the left side vacuum insulation module (303), the side upper connecting edge (410) can be inserted into the gap between the outer connecting frame (403) and the upper folding edge (412). By making the insertion, the upper vacuum insulation module (304) and the left side vacuum insulation module (302) can be properly positioned. After being positioned, each frame (402)(403) and the connecting edge (401)(404)(412) can be connected to each other. Methods such as welding and bonding may be applied for the connection.

[0281] The above frames (402)(403) can achieve the purpose of fastening between members, the purpose of increasing the strength of the main body vacuum insulation module, and the purpose of increasing the overall strength of the main body.

[0282] Referring to FIG. 23, the cross-sectional structure of the main body provided by the upper vacuum insulation module (304) and the left side vacuum insulation module (302) can be seen. A foaming material (406) can be filled in the space of the contact portion between the upper vacuum insulation module (304) and the left side vacuum insulation module (302).

[0283] The above foam member (406) not only performs thermal insulation but also reinforces the strength of the main body and ensures that the gaps between each vacuum insulation module are perfectly sealed. It can be said that such an action is achieved by the main body vacuum insulation module according to the embodiment.

[0284] An example of modification by a second insulation module replacing the above-mentioned foam member is as described above, so the explanation will be omitted.

[0285] In the above description, the positions of the frame (402)(403), fastening edge (401)(404), and bending edge (405)(412), etc., may be provided on other members that are fastened facing each other. Even if they are fastened to members facing each other, there may be no problem with the fastening function.

[0286] An additional member may be provided in the first insulation module. In another aspect, the additional member may be understood as an additional component of the first insulation module.

[0287] The above additional member may further include fastening edges (124, 134, 144, 401, 404, 410, 411) provided on the outer cover (201, 121, 131, 141).

[0288] The above fastening edges (124, 134, 144, 401, 404, 410, 411) may extend from the above outer cover (201, 121, 131, 141).

[0289] The above fastening edge (124, 134, 144, 401, 404, 410, 411) may extend from the point where the outer cover (201, 121, 131, 141) and the conductive resistance sheet (60, 123) are joined.

[0290] The above fastening edge (124, 134, 144, 401, 404, 410, 411) may be formed in substantially the same direction as the surface of the outer cover (201, 121, 131, 141) facing the third space.

[0291] In the case where there are multiple first insulation modules, a fastening edge (124, 134, 144, 401, 404, 410, 411) formed on any one of the multiple first insulation modules may be extended in a direction toward another first insulation module among the multiple first insulation modules.

[0292] The above fastening edge (124, 134, 144, 401, 404, 410, 411) may include a first part and a second part.

[0293] A first portion of the fastening edge (124, 134, 144, 401, 404, 410, 411) may be connected to the outer cover (201, 121, 131, 141). A second portion of the fastening edge (124, 134, 144, 401, 404, 410, 411) may be a portion extending from the first portion in a direction away from the outer cover (201, 121, 131, 141).

[0294] One end of the second part of the above-mentioned fastening edge (124, 134, 144, 401, 404, 410, 411) may be connected to the first part. The other end of the second part of the above-mentioned fastening edge (124, 134, 144, 401, 404, 410, 411) may be spaced apart from the other first insulation module by a predetermined distance.

[0295] The above additional member may further include an inner fastening frame (402) provided on the outer surface of the inner cover (101, 122, 132, 142).

[0296] The inner fastening frame (402) may be provided on the inner side of the inner cover (101, 122, 132, 142). The inner fastening frame (402) may be provided on the outer side of the inner cover (101, 122, 132, 142).

[0297] The inner fastening frame (402) may be provided to cover the edge portion of the inner cover (101, 122, 132, 142) or to overlap the edge portion of the inner cover (101, 122, 132, 142). This configuration can reduce deformation of the edge portion of the inner cover (101, 122, 132, 142) by external force.

[0298] The inner fastening frame (402) may be provided to cover the edge portion of the conductive resistance sheet (60, 123) or to overlap with the conductive resistance sheet (60, 123). This configuration can protect the conductive resistance sheet (60, 123), which is formed as a thin film, from being damaged.

[0299] The inner fastening frame (402) may be provided to cover the portion where the inner cover (101, 122, 132, 142) and the conductive resistance sheet (60, 123) are joined, or the inner fastening frame (402) may be provided to overlap the portion where the inner cover (101, 122, 132, 142) and the conductive resistance sheet (60, 123) are joined. This configuration can reduce the risk of the joint between the conductive resistance sheet (60, 123) and the inner cover (101, 122, 132, 142) being damaged or separated by external force.

[0300] A second insulation module may be disposed on the outside of the conductive resistance sheet (60, 123). One side of the conductive resistance sheet (60, 123) may be disposed to face the third space, and the other side may be disposed to face the second insulation module. This configuration can reduce dew generated around the conductive resistance sheet (60, 123) or reduce damage to the conductive resistance sheet (60, 123) caused by external forces. The conductive resistance sheet (60, 123) may be disposed to be in contact with the second insulation module.

[0301] The inner fastening frame (402) may be provided to overlap with at least a portion of the first part of the fastening edge (124, 134, 144, 401, 404, 410, 411). The first insulation module is robust against external forces. This is because a vacuum space is formed inside the first insulation module, and a supporting unit is provided inside. In contrast, the fastening edge (124, 134, 144, 401, 404, 410, 411) extending from the first insulation module may be vulnerable to deformation due to external forces. If the inner fastening frame (402) is provided to overlap with at least a portion of the first part of the fastening edge (124, 134, 144, 401, 404, 410, 411), the deformation due to the external force can be reduced.

[0302] A second insulation module may be placed in the space formed between the inner fastening frame (402) and the fastening edge (124, 134, 144, 401, 404, 410, 411). In this way, if a second insulation module is placed in the space formed between the inner fastening frame (402) and the fastening edge (124, 134, 144, 401, 404, 410, 411), the deformation of the fastening edge (124, 134, 144, 401, 404, 410, 411) against external force can be further reduced.

[0303] In the case where there are multiple first insulation modules, the inner fastening frame (402) may be configured to connect one inner cover of any one of the multiple first insulation modules with another inner cover.

[0304] In the case where there are multiple first insulation modules, one end of the inner fastening frame (402) may be configured to contact the inner cover of any one of the multiple first insulation modules, and the other end of the inner fastening frame (402) may be configured to connect the inner covers of the other.

[0305] In the case where there are multiple first insulation modules, the inner fastening frame (402) may extend from any one of the multiple first insulation modules toward another of the multiple first insulation modules. At least a portion of the inner fastening frame (402) may be provided on the outer surface of another of the multiple first insulation modules.

[0306] The inner fastening frame (402) may include a first part and a second part. The inner fastening frame (402) may include a first part and a second part to surround the corner of the wall forming the first space. This configuration can make the wall formed by the first insulation module more robust. This is because the corner portion of the wall forming the first space may be more vulnerable to external forces.

[0307] A portion of the first part of the inner fastening frame (402) may be positioned to contact the inner cover (101, 122, 132, 142) of the first insulation module, and another portion of the first part of the inner fastening frame (402) may be positioned to contact the second insulation module. This configuration can make the connection between the first and second insulation modules secure.

[0308] In the case where there are multiple first insulation modules, the first part of the inner fastening frame (402) may be connected to the inner cover of any one of the multiple first insulation modules. The second part of the inner fastening frame (402) may be configured to be connected between the inner covers of another of the multiple first insulation modules.

[0309] In the case where there are multiple first insulation modules, the first part of the inner fastening frame (402) may be configured to contact the inner cover of any one of the multiple first insulation modules. The second part of the inner fastening frame (402) may be configured to contact the inner cover of another of the multiple first insulation modules.

[0310] The inner fastening frame (402) can be placed outside the vacuum space to allow vacuum insulation modules to be fastened to one another and can perform the role of reinforcing the strength of the main body.

[0311] The first portion may be provided to cover the edge portion of the inner cover (101, 122, 132, 142) of the first insulation module. The first portion may be provided to overlap with the edge portion of the inner cover (101, 122, 132, 142) of the first insulation module.

[0312] The first portion may be provided to cover the edge portion of the conductive resistance sheet (60, 123) of the first insulation module. The first portion may be provided to overlap with the conductive resistance sheet (60, 123) of the first insulation module.

[0313] The first portion may be provided to cover the portion where the inner cover (101, 122, 132, 142) of the first insulation module and the conductive resistance sheet (60, 123) of the first insulation module are joined. The first portion may be provided to overlap with the portion where the inner cover (101, 122, 132, 142) of the first insulation module and the conductive resistance sheet (60, 123) of the first insulation module are joined.

[0314] The first insulation module may be in the plurality. The second portion of any one of the plurality of first insulation modules may be provided to cover the edge portion of the inner cover or the conductive resistance sheet (60, 123) of another one of the plurality of first insulation modules. The second portion of any one of the plurality of first insulation modules may be provided to overlap with the edge portion of the inner cover or the conductive resistance sheet (60, 123) of another one of the plurality of first insulation modules.

[0315] The first insulation module may be in the number of units. The second portion of any one of the plurality of first insulation modules may be provided to cover the portion where the conductive resistance sheet (60, 123) is joined to the inner cover of another of the plurality of first insulation modules. The second portion of any one of the plurality of first insulation modules may be provided to overlap with the portion where the conductive resistance sheet (60, 123) is joined to the inner cover of another of the plurality of first insulation modules.

[0316] The first insulation module may further include an outer fastening frame (403) provided to be connected to the fastening edge (124, 134, 144, 401, 404, 410, 411). The outer fastening frame (403) may be provided on the outer surface of the second part of the fastening edge (124, 134, 144, 401, 404, 410, 411).

[0317] The outer fastening frame (403) may include a first part and a second part. The outer fastening frame (403) may include a first part and a second part to surround the corner of the wall forming the second space. The outer fastening frame (403) may be placed outside the vacuum space to allow vacuum insulation modules to be fastened to one another and may serve to reinforce the strength of the main body. The outer fastening frame (403) may be placed in the internal space formed by the fastening edge (124, 134, 144, 401, 404, 410, 411) of the first insulation module and the side rear fastening edge (404) of the right side vacuum insulation module (303).

[0318] The first portion may be provided to cover the edge portion of the fastening edge (124, 134, 144, 401, 404, 410, 411) of the first insulation module. The first portion may be provided to overlap with the edge portion of the fastening edge (124, 134, 144, 401, 404, 410, 411) of the first insulation module.

[0319] The first insulation module may be in the plurality. The first portion of any one of the plurality of first insulation modules may be provided so as to be spaced apart from another conductive resistance sheet (60, 123) among the plurality of first insulation modules by a predetermined distance. The first portion of any one of the plurality of first insulation modules may be provided so as to overlap with the conductive resistance sheet (60, 123).

[0320] There may be a separate fastening member to combine the first and second insulation modules mentioned above.

[0321] The fastening member may be fastened to the second insulation module by penetrating at least a portion of the inner fastening frame (402). The fastening member may be positioned so as not to come into contact with the conductive resistance sheet (60, 123). The fastening member may be positioned at a predetermined distance from the conductive resistance sheet (60, 123). The fastening member may be positioned at a location closer to the second insulation module than the third space. The fastening member may be positioned at a predetermined distance from the conductive resistance sheet in the direction of the second insulation module. This configuration can reduce damage to the conductive resistance sheet (60, 123) during the process of the fastening member being coupled. In addition, when the above fastening member comes into contact with the conductive resistance sheet (60, 123), the first and second fastening members form another heat transfer path, which may cause a problem of increased dew around the conductive resistance sheet (60, 123).

[0322] The above fastening member may be fastened to the second insulation module by penetrating at least a portion of the inner fastening frame (402). The above fastening member may be fastened to the second insulation module by penetrating at least a portion of the outer fastening frame (403).

[0323] The above fastening members may be multiple.

[0324] The first fastening member (441) can be fastened to the second insulation module by penetrating the first part (4021) of the inner fastening frame (402).

[0325] The second fastening member (442) can be fastened to the second insulation module by penetrating the second part (4022) of the inner fastening frame (402). The first and second fastening members can be positioned so as not to come into contact with the conductive resistance sheet (60, 123). The first and second fastening members can be positioned at a predetermined distance from the conductive resistance sheet (60, 123). The first and second fastening members can be positioned at a location closer to the second insulation module than the third space. The first and second fastening members can be positioned at a predetermined distance from the conductive resistance sheet in the direction of the second insulation module.

[0326] In order to increase the fastening force of the above fastening members (441)(442), the plate member of the insulation module may be extended further outward from the conductive resistance sheet, and the fastening member may be fastened to the extended portion. Alternatively, a separate connecting member may be provided, and the fastening member may be fastened to the connecting member.

[0327] The third fastening member can be fastened to the second insulation module by penetrating the fastening edges (124, 134, 144, 401, 404, 410, 411) of the first insulation module.

[0328] FIGS. 19, 20 through 23 depict an embodiment in which the first insulation module and the second insulation module presented in FIG. 10 are connected or combined.

[0329] FIGS. 19, 20 to 23 illustrate an embodiment in which a plurality of first insulation modules presented in FIG. 10 are provided, and the plurality of first insulation modules are connected or combined through a second insulation module.

[0330] The present invention may include a modified example in which the embodiment of FIG. 11 or FIG. 12 is combined with FIG. 19, FIG. 20 to FIG. 23.

[0331] For example, in FIGS. 19, 20 to 23, the first insulation module of FIG. 10 in the embodiment can be replaced with the first insulation module of FIG. 11.

[0332] As another example, in FIGS. 19, 20 to 23, the first insulation module of FIG. 10 in the embodiment can be replaced with the first insulation module of FIG. 12.

[0333] The above variations are identical to the description of the inserted drawings except for the parts different from FIG. 10 and FIG. 11 and the parts different from FIG. 10 and FIG. 12, so a detailed description is omitted. Industrial applicability

[0334] The present invention proposes a vacuum insulation module that can be applied as a module to various insulation articles provided in various sizes, structures, and shapes.

[0335] By enabling the modularization of vacuum insulation, the amount of parts used in insulation products, especially refrigerators, can be drastically reduced.

[0336] By presenting such a plan, we can expect to see the effect of making the industrial use of vacuum insulation more accessible. Explanation of the symbols

[0337] 100, 110: Door vacuum insulation module 120, 130, 140: Main body vacuum insulation module

Claims

Claim 1 A vacuum insulation body comprising a first vacuum insulation module and a second vacuum insulation module, wherein the first vacuum insulation module and the second vacuum insulation module each comprise: an inner cover defining at least a portion of a wall for a first space; an outer cover providing at least a portion of a wall for a second space and spaced apart from the inner cover in a first direction; a vacuum space provided between the inner cover and the outer cover; and a supporting unit provided to reduce deformation of the vacuum space, comprising a portion extending in the first direction and a support plate extending in a direction different from the first direction, wherein the first vacuum insulation module comprises an edge coupled to the second vacuum insulation module. Claim 2 A vacuum insulation body comprising a first vacuum insulation module and a second vacuum insulation module, wherein the first vacuum insulation module and the second vacuum insulation module each comprise: an inner cover defining at least a portion of a wall for a first space; an outer cover providing at least a portion of a wall for a second space and spaced apart from the inner cover in a first direction; a vacuum space provided between the inner cover and the outer cover; and a supporting unit provided to reduce deformation of the vacuum space and having a portion extending in the first direction, wherein the first vacuum insulation module comprises an edge coupled to the second vacuum insulation module. Claim 3 A vacuum insulation body comprising a first vacuum insulation module and a second vacuum insulation module, wherein the first vacuum insulation module and the second vacuum insulation module each comprise: an inner cover defining at least a portion of a wall for a first space; an outer cover providing at least a portion of a wall for a second space and spaced apart from the inner cover in a first direction; a vacuum space provided between the inner cover and the outer cover; and a supporting unit including a support plate extending in a direction different from the first direction, provided to reduce deformation of the vacuum space; and wherein the first vacuum insulation module comprises an edge coupled to the second vacuum insulation module. Claim 4 A vacuum insulation body according to any one of claims 1 to 3, wherein the edge of the first vacuum insulation module includes a fastening edge provided on the outer cover. Claim 5 A vacuum insulation body according to any one of claims 1 to 3, wherein the edge of the first vacuum insulation module includes a fastening edge extending from the outer cover, and the fastening edge is provided in a direction corresponding to one surface where the outer cover faces the vacuum space. Claim 6 In any one of claims 1 to 3, the edge of the first vacuum insulation module extends in a direction toward the second vacuum insulation module. Claim 7 In any one of claims 1 to 3, the outer cover is provided larger than the inner cover by the edge, forming a vacuum insulation body. Claim 8 In any one of claims 1 to 3, the edge of the first vacuum insulation module comprises a first portion and a second portion extending from the first portion in a direction away from the outer cover, and the end of the second portion is a vacuum insulation body spaced apart from the second vacuum insulation module by a set distance. Claim 9 A vacuum insulation body according to any one of claims 1 to 3, wherein the edge of the first vacuum insulation module defines the first edge, the second vacuum insulation module includes a second edge connected to the first edge, and a fastening frame disposed in the area defined by the first edge and the second edge. Claim 10 A vacuum insulation body comprising an outer fastening frame including at least a portion connecting an outer cover provided to the first vacuum insulation module and an outer cover provided to the second vacuum insulation module, in any one of claims 1 to 3. Claim 11 In claim 10, at least a portion of the outer fastening frame comprises a vacuum insulation body including a first portion that overlaps the outer cover of the first vacuum insulation module and a second portion that overlaps the outer cover of the second vacuum insulation module. Claim 12 In claim 10, at least a portion of the outer fastening frame comprises a first portion connected to the first vacuum insulation module and a second portion bent from the first portion and connected to the second vacuum insulation module. Claim 13 A vacuum insulation body comprising an inner fastening frame including at least a portion connecting an inner cover provided to the first vacuum insulation module and an inner cover provided to the second vacuum insulation module, in any one of claims 1 to 3. Claim 14 In claim 13, at least a portion of the inner fastening frame comprises a first portion that overlaps the inner cover of the first vacuum insulation module and a second portion that overlaps the inner cover of the second vacuum insulation module. Claim 15 In claim 13, at least a portion of the inner fastening frame comprises a first portion connected to the first vacuum insulation module and a second portion bent from the first portion and connected to the second vacuum insulation module. Claim 16 A vacuum insulation body according to any one of claims 1 to 3, comprising an additional insulation module disposed at the edge of the first vacuum insulation module, wherein the insulation degree of the additional insulation module is formed to be lower than the insulation degree of at least one of the first vacuum insulation module and the second vacuum insulation module. Claim 17 In claim 16, a space into which an additional member is inserted is formed in the part where the first vacuum insulation module and the second vacuum insulation module come into contact, and the additional insulation module is a vacuum insulation body disposed in the space with the additional member inserted. Claim 18 A vacuum insulation body comprising, in any one of claims 1 to 3, an additional insulation module disposed at the edge of the first vacuum insulation module; and a fastening member for fastening the additional insulation module to the edge of the first vacuum insulation module. Claim 19 A vacuum insulation body according to any one of claims 1 to 3, wherein the edge of the first vacuum insulation module is provided at both ends of the first vacuum insulation module, and a plurality of second vacuum insulation modules are provided and coupled to both ends of the first vacuum insulation module. Claim 20 A refrigerator or warming cabinet comprising a vacuum insulation body according to any one of paragraphs 1 to 3.

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